VisitorCount
  Modified: 4 Nov., 2009 English Japanese

Contact to:
   Ichiro AKAI  
   (E-mail)

 Papers List

 2017

  • High precision modeling of a damped oscillation in coherent phonon signals by Bayesian inference

    S. Aihara, M. Hamamoto, K. Iwamitsu, M. Okada, I. Akai

    AIP Adv. 7, 045107-1-5 (2017).   Go


International Conferences

  • Bayesian Spectroscopy for Spectral and Normal Mode Analyses in Solid-State Materials (invited)

    K. Iwamitsu, M. Okada, and I. Akai

    International Symposium on Kumamoto Synchrotron Radiation (ISKSR5) - The 5th IROAST Seminar - Progress of Data Analysis, Data-Driven Science, and Theory for Science, 2 Nov. 9:35-10:10, 100th Anniversary Memorial Hall, Faculty of Engineering, Kumamoto University, Japan, 1-2 Nov. 2017.   Go

  • Bayesian spectroscopy of excitonic photoluminescence spectra in Cu2O thin crystals

    A. Kiridoshi, S. Arishima, M. Mizumaki, K. Iwamitsu, I. Akai

    International Symposium on Kumamoto Synchrotron Radiation (ISKSR5) - The 5th IROAST Seminar - Progress of Data Analysis, Data-Driven Science, and Theory for Science, 1 Nov. 16:30-18:00, 100th Anniversary Memorial Hall, Faculty of Engineering, Kumamoto University, Japan, 1-2 Nov. 2017.   Go

  • Bayesian spectroscopy of x-ray photoelectron spectra in graphenes having atomic thicknesses on SiC substrates

    S. Arishima, K. Iwamitsu, K. Takahashi, M. Okada, I. Akai

    International Symposium on Kumamoto Synchrotron Radiation (ISKSR5) - The 5th IROAST Seminar - Progress of Data Analysis, Data-Driven Science, and Theory for Science, 1 Nov. 16:30-18:00, 100th Anniversary Memorial Hall, Faculty of Engineering, Kumamoto University, Japan, 1-2 Nov. 2017.   Go

  • Bayesian spectroscopy in solid-state photo-physics (invited)

    Ichiro Akai, Kazunori Iwamitsu, Masato Okada

    International Meeting on "High-Dimensional Data-Driven Science" (HD3-2017), 13 Sep. 15:20-16:00, Mielparque Kyoto, Japan, 10-13 Sep. 2017.   Go

  • Bayesian spectroscopy for spectral and normal mode analyses in solid-state materials

    Kazunori Iwamitsu, Masato Okada, Ichiro Akai

    International Meeting on "High-Dimensional Data-Driven Science" (HD3-2017), 12 Sep. 14:00-15:40: P-29, Mielparque Kyoto, Japan, 10-13 Sep. 2017.   Go

  • Bayesian spectroscopy of x-ray photoelectron spectra in graphenes having atomic thicknesses on SiC substrates

    S. Arishima, K. Iwamitsu, K. Takahashi, M. Okada, I. Akai

    International Meeting on "High-Dimensional Data-Driven Science" (HD3-2017), 12 Sep. 14:00-15:40: P-28, Mielparque Kyoto, Japan, 10-13 Sep. 2017.   Go

  • Bayesian spectroscopy of excitonic photoluminescence spectra in Cu2O thin crystals

    A. Kiridoshi, S. Arishima, M. Mizumaki, K. Iwamitsu, and I. Akai

    International Meeting on "High-Dimensional Data-Driven Science" (HD3-2017), 12 Sep. 14:00-15:40: P-33, Mielparque Kyoto, Japan, 10-13 Sep. 2017.   Go

  • Sparse modeling of extended x-ray absorption fine structures (invited)

    Ichiro Akai

    14:40-15:20 in ISKSR4: 4th International Symposium on Kumamoto Synchrotron Radiation: Cooperation of Experiments and Computer Sciences / The 1st IROAST Seminar -, D201, Faculty of Science, Kumamoto University, 15 May. 2017.


 2016

  • Bayesian Analysis of an Excitonic Absorption Spectrum in a Cu2O Thin Film Sandwiched by Paired MgO Plates

    K. Iwamitsu, S. Aihara, M. Okada, I. Akai

    J. Phys. Soc. Japan 85, 094716-1-4 (2016).   Go

  • Photoluminescence Spectra of CdTe Multi-Quantum Wells Sandwiched by Ultrathin MnTe Layers and Their Temperature Dependence

    K. Iwamitsu, K. Hatada, S. Ichigozaki, N. Hatada, T. Shimamoto, I. Akai A. Yu. Serov, N. G. Filosofov, G. Karczewski, V. F. Agekian

    J. Lumin. 169, 665-668 (2016).   Go


International Conferences

  • Data Driven Science by Sparse Modeling on Materials Informatics (invited)

    I. Akai

    14:10-14:50 in ISKSR3: 3rd International Symposium on Kumamoto Synchrotron Radiation: Data Analysis and Data-Driven Science, C122, Faculty of Science, Kumamoto University, 30 Nov. 2016..   Go

  • Bayesian analysis of X-ray photoelectron spectra in monolayer and multilayer graphenes grown on SiC(0001)

    K. Iwamitsu, S. Arishima, K. Takahashi, S. Tokuda, M. Okada, and I. Akai

    14:50-15:10 in ISKSR3: 3rd International Symposium on Kumamoto Synchrotron Radiation: Data Analysis and Data-Driven Science, C122, Faculty of Science, Kumamoto University, 30 Nov. 2016..   Go

  • Mode Decomposition of Coherent Phonon Signals by SpDMD

    S. Aihara, S. Murata, S. Tokuda, K. Mizoguchi, M. Okada, I. Akai

    12:10-13:30 in ISKSR3: 3rd International Symposium on Kumamoto Synchrotron Radiation: Data Analysis and Data-Driven Science, C122, Faculty of Science, Kumamoto University, 30 Nov. 2016..   Go

  • Substrate Temperature Dependence of BiI3 Thin Films on Al2O3 Substrate Grown by a Hot-Wall Technique

    R. Sakamoto, K. Iwamitsu, S. Aihara, F. Ichikawa, T. Shimamoto, I. Akai

    12:10-13:30 in ISKSR3: 3rd International Symposium on Kumamoto Synchrotron Radiation: Data Analysis and Data-Driven Science, C122, Faculty of Science, Kumamoto University, 30 Nov. 2016..   Go

  • Photoluminescence spectra in Cu2O thin crystals recrystallized epitaxially between paired MgO plates and their polarization dependences

    K. Gunji, S. Aihara, A.Kiridoshi, Y. Tsutsumi, K. Iwamitsu, F. Ichikawa, I. Akai

    12:10-13:30 in ISKSR3: 3rd International Symposium on Kumamoto Synchrotron Radiation: Data Analysis and Data-Driven Science, C122, Faculty of Science, Kumamoto University, 30 Nov. 2016..   Go

  • Spectral decomposition of excitonic photoluminescence spectra in Cu2O thin crystals by Bayesian inference

    A. Kiridoshi, Y. Tsutsumi, K. Gunji, S. Aihara, K. Iwamitsu, S. Tokuda, M. Okada, I. Akai

    12:10-13:30 in ISKSR3: 3rd International Symposium on Kumamoto Synchrotron Radiation: Data Analysis and Data-Driven Science, C122, Faculty of Science, Kumamoto University, 30 Nov. 2016..   Go

  • Spectral decomposition of X-ray photoelectron spectrum in graphenes having atomic thicknesses with a replica exchange Monte Carlo method

    S. Arishima, K. Iwamitsu, S. Aihara, K. Takahashi, S. Tokuda, M. Okada and I. Akai

    12:10-13:30 in ISKSR3: 3rd International Symposium on Kumamoto Synchrotron Radiation: Data Analysis and Data-Driven Science, C122, Faculty of Science, Kumamoto University, 30 Nov. 2016..   Go


 2015

  • Photoluminescence spectra and biaxial stress effects of yellow 1S excitons in Cu2O thin films recrystallized epitaxially between paired MgO plates

    S. Aihara, A. Ota, K. Iwamitsu, F. Ichikawa, H. Isobe, T. Shimamoto, I. Akai

    J. Lumin. 167 211-215, (2015).   Go


International Conferences

  • Trapping potential formation for the yellow 1S excitons in Cu2O thin films sandwiched by MgO plates

    S. Aihara K. Gunji, A. Ota, K. Iwamitsu, F. Ichikawa, H. Isobe, T. Shimamoto, I. Akai

    Mo-PM-15, 17th International Conference on Modulated Semiconductor Structures (Joint Conference EP2DS-21/MSS-17), July 26-31, 2015, Sendai, Japan   Go

  • Excitonic Transitions in Thin Films of Layered Semiconductor BiI3 Grown by a Hot-Wall Technique

    R. Sakamoto, T. Ueda, K. Iwamitsu, F. Ichikawa, K. Watanabe, T. Shimamoto, and I. Akai

    Tu-PM-14, 17th International Conference on Modulated Semiconductor Structures (Joint Conference EP2DS-21/MSS-17), July 26-31, 2015, Sendai, Japan   Go

  • Bayesian Estimation of Excitonic Absorption Spectra

    K. Iwamitsu, S. Aihara, M. Okada, I. Akai

    O-1, International Symposium on Advanced Materials Having Multi-Degrees-of-Freedom -- Optical properties, Structural Analyses, Imaging and Informatics of Materials -- (ISAMMDoF2015), Nov. 2-3, 2015, Kumamoto, Japan   Go

  • Bayesian deconvolution of photoluminescence spectra of yellow 1S excitons in Cu2O thin films sandwiched by MgO plates

    S. Aihara, K. Gunji, K. Iwamitsu, M. Okada, I. Akai

    O-2, International Symposium on Advanced Materials Having Multi-Degrees-of-Freedom -- Optical properties, Structural Analyses, Imaging and Informatics of Materials -- (ISAMMDoF2015), Nov. 2-3, 2015, Kumamoto, Japan   Go

  • Photoluminescence spectra in Cu2O thin crystals and thier polarization dependences

    K. Gunji, S. Aihara, F. Ichikawa, I. Akai

    P-11, International Symposium on Advanced Materials Having Multi-Degrees-of-Freedom -- Optical properties, Structural Analyses, Imaging and Informatics of Materials -- (ISAMMDoF2015), Nov. 2-3, 2015, Kumamoto, Japan   Go

  • Optimal Growth Condition of Layered Semiconductor BiI3 Grown by Hot-Wall Method

    R. Sakamoto, K. Iwamitsu, S. Aihara, F. Ichikawa, T. Shimamoto, I. Akai

    P-12, International Symposium on Advanced Materials Having Multi-Degrees-of-Freedom -- Optical properties, Structural Analyses, Imaging and Informatics of Materials -- (ISAMMDoF2015), Nov. 2-3, 2015, Kumamoto, Japan   Go

  • Long continuing coherent phonon in a bismuth thin-film

    M. Hamamoto, K. Iwamitsu, I. Akai

    P-13, International Symposium on Advanced Materials Having Multi-Degrees-of-Freedom -- Optical properties, Structural Analyses, Imaging and Informatics of Materials -- (ISAMMDoF2015), Nov. 2-3, 2015, Kumamoto, Japan   Go

  • Bayesian estimation of excitonic absorption spectra with the Metropolis algorithm

    K. Iwamitsu, S. Aihara, M. Okada and I. Akai

    , International Meeting on "High-Dimensional Data Driven Science" (HD3-2015) Dec. 14-17, 2015, Kyoto, Japan   Go


 2014

  • Stress Effects on nP Yellow Excitons in Cu2O Thin Films Recrystallized Epitaxially in a Sample Gap between Paired MgO Substrates

    K. Iwamitsu, S. Aihara, A. Ota, F. Ichikawa, T. Shimamoto, I. Akai

    J. Phys. Soc. Jpn. 83, 124714-1-9 (2014).   Go

  • Thickness dependence of excitonic spectra in Cu2O thin films sandwiched by MgO plates

    S. Aihara, A. Ota, K. Iwamitsu, T. Shimamoto, and I Akai

    JPS Conf. Proc. 1, 012077-1-5 (2014).   Go

  • Stress-induced effects in yellow and green excitons of Cu2O thin films sandwiched by MgO plates

    K. Iwamitsu, S. Aihara, A. Ota, Y. Yoshizaki, T. Shimamoto, and I. Akai

    JPS Conf. Proc. 1, 012079-1-5 (2014).   Go

  • Coherent phonons in a 1, 3, 5-tri-phenylbenzene crystal

    T. Kawamoto, Y. Yoshizaki, K. Yamashiro, K. Iwamitsu, T. Shimamoto, and I. Akai

    JPS Conf. Proc. 1, 012071 (2014).   Go


International Conferences

  • Two-Dimensional Compressive Stress Effect in Cu2O Thin Films Sandwiched by MgO Plates for Accumulating The Yellow Excitons

    K. Iwamitsu, S. Aihara, A. Ota, F. Ichikawa, T. Shimamoto, I. Akai

    D6-O25-007 The 15th IUMRS-International Conference in Asia (IUMRS-ICA 2014)
    Symposium D-6: Novel Functionalities by Cooperative Excitations, 24-30 Aug. 2014 at Fukuoka University, Fukuoka, Japan.   Go

  • Photoluminescence Spectra and Thermodynamics of Trapped Yellow- Excitons in Cu2O Thin Films under Biaxial Compressive Stresses

    S. Aihara, A. Ota, K. Iwamitsu, F. Ichikawa, T. Shimamoto, I. Akai

    D6-O25-008 The 15th IUMRS-International Conference in Asia (IUMRS-ICA 2014)
    Symposium D-6: Novel Functionalities by Cooperative Excitations, 24-30 Aug. 2014 at Fukuoka University, Fukuoka, Japan.   Go

  • Photoluminescence spectra and their temperature dependence of CdTe multi-quantum wells sandwiched by ultrathin MnTe layers

    K. Iwamitsu, K. Hatada, S. Ichigozaki, N. Hatada, T. Shimamoto, I. Akai, A. Yu. Serov, N. G. Filosofov, G. Karczewski and V. F. Agekyan

    The International Conference of Luminescence (ICL2014)
    13-18 Jul. 2014, Wroclaw, Poland.   Go

  • Photoluminescence spectra and their temperature dependence of yellow-excitons in Cu2O thin films re-crystalized epitaxially between paired MgO plates

    S. Aihara, A. Ota, K. Iwamitsu, F. Ichikawa, T. Shimamoto, I. Akai

    The International Conference of Luminescence (ICL2014)
    13-18 Jul. 2014, Wroclaw, Poland.   Go

  • Two-Dimensional Compressive Stress Effect in Cu2O Thin Films Sandwiched by MgO Substrates

    K. Iwamitsu, S. Aihara, A. Ota, F. Ichikawa, T. Shimamoto, and I. Akai

    2nd International Symposium on Kumamoto Synchrotron Radiation (ISKSR2): Young SciensitsfDay 14:50-15:10
    16 May 2014, C226 Lecture Room, Faculty of Science, Kumamoto University

  • Photoluminescence spectra and their temperature dependence of yellow-excitons in Cu2O thin films re-crystallized epitaxially between paired MgO plates

    S. Aihara, A. Ota, K. Iwamitsu, F. Ichikawa, T. Shimamoto, I. Akai

    2nd International Symposium on Kumamoto Synchrotron Radiation (ISKSR2): Young SciensitsfDay 15:10-15:30
    16 May 2014, C226 Lecture Room, Faculty of Science, Kumamoto University

  • Diffusion of high density excitons in Lz-gradient quantum well (invited)

    I. Akai

    The Fifth Meeting of Research Consortium on High-pressure Research and The Kumamoto International Symposium on Recent Advancements of Physics and Mineralogy VI 16:00-16:20
    20 Jan. 2014, The 100th Anniversary Hall KUMAMOTO UNIVERSITY


 2013

  • Diffusion of high density excitons in Lz-gradient quantum well

    I. Akai, S. Konishi, T. Kitano, T. Kawamoto, K. Iwamitsu, T. Shimamoto and A. Fujii

    Proceedings of 21st Int. Symp. "Nanostructures: Physics and Technology" , 126-127 (2013).   St Petersburg Academic University, 2013, ISBN 978-5-4386-0145-6

  • Wavelength modulated excitonic spectra of Cu2O thin films sandwiched by MgO plates

    K. Iwamitsu, S. Aihara, T. Shimamoto, A. Fujii, and I. Akai

    European Phys. J. B 86, 194-1-6 (2013).   Go


International Conferences

  • Stress-induced effects of Cu2O thin films sandwiched by MgO substrates and their thickness dependence

    K. Iwamitsu, S. Aihara, A. Ota, Y. Yoshizaki, T. Shimamoto and I. Akai

    1st International Symposium on Kumamoto Synchrotron Radiation (ISKSR1): Reverse Monte Carlo modeling for non-crystalline and distorted crystalline materials 15:40-16:00, C329 Lecture Room, Faculty of Science, Kumamoto University Oct. 25 (2013).

  • Diffusion of high density excitons in Lz-gradient quantum well

    I. Akai, S. Konishi, T. Kitano, T. Kawamoto, K. Iwamitsu, T. Shimamoto and A. Fujii

    21st Int. Symp. "Nanostructures: Physics and Technology" TN.01o, Saint Petersburg Russia, Jun. 24-28 (2013).   Go

  • Stress-induced effects in yellow and green excitons of Cu2O thin films sandwiched by MgO plates

    K. Iwamitsua, S. Aihara, A. Ota, Y. Yoshizaki, T. Shimamoto, A. Fujii, I. Akai

    APPC12 / The 12th Asia Pacific Physics Conference A4-PMo16, International Conference Hall, Makuhari Messe, Chiba Japan, Jul. 14-19 (2013).   Go

  • Thickness dependence of excitonic spectra in Cu2O thin films sandwiched by MgO plates

    S. Aihara, A. Ota, K. Iwamitsu, T. Shimamoto, A. Fujii, I. Akai

    APPC12 / The 12th Asia Pacific Physics Conference A4-4-O1, International Conference Hall, Makuhari Messe, Chiba Japan, Jul. 14-19 (2013).   Go

  • Coherent phonons in 1,3,5-tri-phenylbenzene single crystals

    T. Kawamoto, Y. Yoshizaki, K. Yamashiro, K. Iwamitsu, T. Shimamoto, A. Fujii and I. Akai

    APPC12 / The 12th Asia Pacific Physics Conference A3-PWe-8, International Conference Hall, Makuhari Messe, Chiba Japan, Jul. 14-19 (2013).   Go


 2012

  • Wavelength modulated absorption spectra of Cu2O thin films sandwiched by MgO plates

    Iwamitsu, Kazunori S. Aihara, A. Ota, Y. Yoshizaki, T. Shimamoto, A. Fujii, I. Akai

    Physics Reports of Kumamoto University 14 41-51, (2012).   Go

  • High Density Excitation Effects in Excitonic Diffusion Processes in Lz-Gradient Quantum Well

    S. Konishi, Y. Nagatomo, K. Iwamitsu, T. Shimamoto, A. Fujii and I. Akai

    phys. status solidi (c) 9 2509-2512, (2012).   Go

  • Wavelength modulated excitonic spectra in green series of Cu2O thin films sandwiched by MgO plates

    K. Iwamitsu, S. Aihara, T. Shimamoto, A. Fujii and I. Akai

    phys. status solidi (c) 9 2489-2492, (2012).   Go

  • A wavelength modulation system for highly sensitive absorption spectroscopy

    K. Iwamitsu, S. Aihara, T. Shimamoto, A. Fujii, and I. Akai

    Rev. Sci. Instrum. 83 073101, (2012).   Go

  • Unidirectional Exciton Diffusion in Lz-gradient Quantum Well

    I. Akai, S. Inao, Y. Nagatomo, K. Iwamitsu, T.Shimamoto, A. Fujii

    Physics Procedia 29 1, (2012).   Go

  • Dynamics and efficiency of energy transfer in light-harvesting p-conjugated small denderimers

    K. Satake, I. Akai, M. Kimura, I. Katayama, J. Takeda

    Physics Procedia in press, (2012).   Go


International Conferences

  • Excitonic Spectra of Cu2O Thin Films Sandwiched by MgO Plates

    K. Iwamitsu, S. Aihara, T. Shimamoto, A. Fujii, I. Akai

    International Symposium on Advanced Materials Having Multi-Degrees-of-Freedom (ISAMMDoF) O-2, Kumamoto Japan, Nov. 1-2 (2012).   Go

  • Characteristics of YBa2Cu3O7-x Thin Film Prepared by Shock-Compacted YBa2Cu3O7-x Bulk

    Y. Kim, T. Sueyoshi1, K. Tsuchiya, I. Akai

    International Symposium on Advanced Materials Having Multi-Degrees-of-Freedom (ISAMMDoF) O-3, Kumamoto Japan, Nov. 1-2 (2012).   Go

  • Excitonic Diffusion Processes in Lz-Gradient Quantum Well under High Density Excitation

    S. Konishi, Y. Yoshizaki, K. Iwamitsu, T. Shimamoto, A. Fujii, I. Akai

    International Symposium on Advanced Materials Having Multi-Degrees-of-Freedom (ISAMMDoF) P-11, Kumamoto Japan, Nov. 1-2 (2012).   Go

  • Thickness Dependence of Excitonic Spectra in Cu2O Thin Films Sandwiched by MgO Substrates

    S. Aihara, A. Ota, Y. Yoshizaki, K. Iwamitsu, T. Shimamoto, A. Fujii, I. Akai

    International Symposium on Advanced Materials Having Multi-Degrees-of-Freedom (ISAMMDoF) P-12, Kumamoto Japan, Nov. 1-2 (2012).   Go

  • Coherent Phonons in trans-Stilbene Single Crystals

    Y. Yoshizaki, K. Yamashiro, T. Kawamoto, T. Shimamoto, A. Fujii, I. Akai

    International Symposium on Advanced Materials Having Multi-Degrees-of-Freedom (ISAMMDoF) P-13, Kumamoto Japan, Nov. 1-2 (2012).   Go

  • Optical Spectra of Light-Harvesting Antenna Component Molecules and Their Temperature Dependence

    S. Torihara, Y. Nakamura, K. Iwamitsu, Y. Yoshizaki, A. Fujii, I. Akai

    International Symposium on Advanced Materials Having Multi-Degrees-of-Freedom (ISAMMDoF) P-14, Kumamoto Japan, Nov. 1-2 (2012).   Go

  • Ultrafast Time-Resolved Photoluminescence Spectroscopy by an Optical Kerr Gate Method

    S. Ichigozaki, N. Hatada, T. Iwasaki, Y. Yoshizaki, K. Iwamitsu, A. Fujii, I. Akai

    International Symposium on Advanced Materials Having Multi-Degrees-of-Freedom (ISAMMDoF) P-16, Kumamoto Japan, Nov. 1-2 (2012).   Go

  • Soft-vibrational modes in pi-conjugated antenna subunit molecules of light-harvesting dendrimers

    I. Akai, K. Yamashiro, Y. Yoshizaki, T. Shimamoto, K. Iwamitsu, A. Fujii

    The 10th Int. Conf. on Excitonic Processes in Condensed Matter, Nanostructured and Molecular Materials (EXCON2012) P002, Geoningen The Netherlands, July 2-6 (2012).   Go

  • Wavelength modulated excitonic spectra of Cu2O thin films sandwiched by MgO plates

    K. Iwamitsu, S. Aihara, T. Shimamoto, A. Fujii, and I. Akai

    The 10th Int. Conf. on Excitonic Processes in Condensed Matter, Nanostructured and Molecular Materials (EXCON2012) P044, Geoningen The Netherlands, July 2-6 (2012).   Go

  • Wavelength modulated excitonic spectra in green series of Cu2O thin films sandwiched by MgO plates

    K. Iwamitsu, S. Aihara, T. Shimamoto, A. Fujii, and I. Akai

    5th Int. Conf. on Optical, Optoelectronic & Photonic Materials & Applications (ICOOPMA2012) 1C2-1, Nara Japan, June 3-7 (2012).   Go

  • High Density Excitation Effects in Excitonic Diffusion Processes in Lz-Gradient Quantum Well

    S. Konishi, Y. Nagatomo, K. Iwamitsu, T. Shimamoto, A. Fujii, I. Akai

    5th Int. Conf. on Optical, Optoelectronic & Photonic Materials & Applications (ICOOPMA2012) 1P-23, Nara Japan, June 3-7 (2012).   Go


 2011

  • Spectroscopic investigation of excitons, photocarriers, and@ bias-induced carriers in regioregular poly(3-alkylthiophene)

    K. Kanemoto, M. Yasui, T. Higuchi, D. Kosumi, I. Akai, T. Karasawa, H. Hashimoto

    Phys. Rev. B 83, 205203 (2011).   Go

  • Atomistic mechanisms of rapid energy transport in light-harvesting molecules

    S. Ohmura, S. Koga, I. Akai, F. Shimojo, R. K. Kalia, A. Nakano, P. Vashishta

    Appl. Phys. Lett. 98, 113302 (2011).   Go

  • Rapid energy transfer process through pi*-conjugation network in meta-linked branching dendrimers

    I. Akai, K. Miyanari, T. Shimamoto, A. Fujii, M. Kimura

    phys. status. solidi (c) 8, 155-158 (2011).   Go

  • Vibration analyses and rapid energy transfer in pi-conjugated dendrimers having oligo phenylenevinylene antennas

    T. Shimamoto, K. Miyanari, A. Fujii, I. Akai, M. Kimura

    phys. status. solidi (c) 8, 58-61 (2011).   Go


International Conferences

  • Coherent Phonons in a pi-conjugated Antenna Subunit Molecule of Light-harvesting Dendrimers

    I. Akai, T. Shimamoto, K. Yamashiro, M. Kobori, K. Iwarnitsu, A. Fujii

    The 7th International Dendrimer Symposium (IDS'7 Go ), I2.1, Washington D.C USA, 26 June-1 July, 2011.

  • Nonadiabatic Molecular-Dynamics Study of Electron Transport in Light-harvesting Dendrimers

    S. Ohmura, I. Akai, F. Shimojo, R. K. Kalia , A. Nakano, P. Vashishta

    The 7th International Dendrimer Symposium (IDS'7 Go ), G1.4, Washington D.C USA, 26 June-1 July, 2011.

  • Unidirectional Exciton Diffusion in Lz-gradient Quantum Well

    I. Akai, S. Inao, Y. Nagatomo, K. Iwamitsu, T.Shimamoto, A. Fujii1

    The 16th International Conference on Luminescence (ICL'11 Go ), TuP204, Michigan USA, 26 June-1 July, 2011.

  • Dynamics and efficiency of energy transfer in light-harvesting p-conjugated small denderimers

    K. Satake, I. Akai, M. Kimura, I. Katayama, J. Takeda

    The 16th International Conference on Luminescence (ICL'11 Go ), WP102, Michigan USA, 26 June-1 July, 2011.


 2010

  • Direct optical probing of negative carriers from an operating [6,6]-phenyl C61 butyric acid methyl ester diode

    K. Kanemoto, A. Ogata, N. Inoue, T. Kusumoto, H. Hashimoto, I. Akai, T. Karasawa

    Appl. Phys. Lett. 97, 033307 (2010).   Go

  • Dexter type energy transfer in meta-linked branching dendrimers

    I. Akai, K. Miyanari, T. Shimamoto, A. Fujii, M. Kimura

    Physics Reports of Kumamoto University, 13 , 333-340 (2010).   Go

  • Length dependence of rapid energy transfer in pi-conjugated dendrimers having oligo phenylenevinylene antennas

    T. Shimamoto, K. Miyanari, A. Fujii, I. Akai, M. Kimura

    Physics Reports of Kumamoto University, 13 , 341-348 (2010).  


International Conferences

  • Rapid energy transfer process through pi*-conjugattion network in meta-linked branching dendrimers

    I. Akai, K. Miyanari, T. Shimamoto, A. Fujii

    The 9th International Conference on Excitonic and Photonic Processes in Condensed and Nano Materials (EXCON'10 Go ), 6O01, Brisbane Australia, 11-16 July, 2010.

  • Vibration analyses and rapid energy transfer in pi-conjugated dendrimers having oligo phenylenevinylene antennas

    T. Shimamoto, K. Miyanari, A. Fujii, I. Akai

    The 9th International Conference on Excitonic and Photonic Processes in Condensed and Nano Materials (EXCON'10 Go ), 6P09, Brisbane Australia, 11-16 July, 2010.

  • Energy transfer efficiency from light-harvesting antennas to the core in pi-conjugated small dendrimers

    Y. Nagayoshi, K. Satake, I. Akai, M. Kimura, I. Katayama, and J. Takeda

    International Conference on Science and Technology of Synthetic Metals 2010 Go , 5P-067, Kyoto Japan, 4-9 July, 2010.

  • Soft vibrational modes and their importance in LH-dendrimers (invited)

    I. Akai

    The 1st International Symposium on Advanced Soft Materials -- Phyics and Chemistry -- (ISASM), 26 Nov., 16:30-17:00, Kumamoto Japan, 25-26 Nov, 2010.

  • First-Principles Simulations of Electron Transport in Light-Harvesting Dendrimers

    S. Ohmura, I. Akai, and F. Shimojo

    The 1st International Symposium on Advanced Soft Materials -- Phyics and Chemistry -- (ISASM), 26 Nov., 16:15-16:00, Kumamoto Japan, 25-26 Nov, 2010.


 2009

  • Highly efficient light-harvesting nano- and biomaterials: material design and new laser spectroscopy (invited review)

    J. Takeda, I. Katayama, I. Akai, M. Kimura

    Photosynthesis: Theory and Applications in Energy, Biotechnology and Nanotechnology, Chap. 1, pp.1-42, Nova Science Publisher , (2009).   Go ,   amazon:Go

  • Temperature effects on quasi-isolated conjugated polymers as revealed by temperature-dependent optical spectra of 16-mer oligothiophene diluted in a sold matrix

    K. Kanemoto,1,I. Akai, M. Sugisaki, H. Hashimoto, T. Karasawa, N. Negishi, Y. Aso

    J. Chem. Phys. 130, 234909 (2009).   Go

  • Morphology-Dependent Carrier and Exciton Generations in Regioregular Poly(3-hexylthiophene) Polymer Diodes as Revealed by Bleaching Spectroscopy

    K. Kanemoto, M. Yasui, D. Kosumi, A. Ogata, M. Sugisaki, T. Karasawa, I. Akai, H.Hashimoto

    Phys. Rev. Lett. 103, 187402 (2009).   Go

  • Intrachain Photoluminescence Dynamics of a Long Oligothiophene at Room Temperature

    K. Kanemoto, M. Sugisaki, H. Hashimoto, I. Akai, T. Karasawa, N. Negishi, Y. Aso

    J. Lumin. 129, 1845-1848 (2009).   Go

  • Decay kinetics of the luminescence of Ag- centers doped in alkali halide crystals

    T. Kawai, I. Akai, H. Ichida, Y. Kanematsu, K. Mizoguchi, T. Karasawa

    phys. status solidi (b) 246, 1327-1333 (2009).   Go

  • Rapid energy transfer and its temperature dependence in pi-conjugated dendrimers

    I. Akai, K. Miyanari, T. Shimamoto, A. Fujii, H. Nakao, A. Okada, K. Kanemoto, T. Karasawa, A. Ishida, A. Yamada, I. Katayama, J. Takeda, M. Kimura

    phys. status solidi (c) 6, 77-80 (2009).   Go

  • Temperature dependence of intra-chain photoluminescence of a long oligothiophene

    K. Kanemoto, I. Akai, H. Hashimoto, T. Karasawa, N. Negishi, Y. Aso

    phys. status solidi (c) 6, 193-196 (2009).   Go


International Conferences

  • Ultrafast process and temperature dependence of rapid energy transfer in pi-conjugated dendrimers

    I. Akai, K. Miyanari, T. Shimamoto, A. Fujii, K. Kanemoto, J. Takeda, M. Kimura

    International Dendrimer Symposium 2009 (IDS:6), Thu 3.3 , Stockholm Sweden, 14-18 Jun., 2009.

  • Vibration analyses and rapid energy transfer process through pi*-conjugation network in phenylene dendrimers

    K. Miyanari, T. Shimamoto, A. Fujii, I. Akai, M. Kimura

    International Dendrimer Symposium 2009 (IDS:6), Poster 3.9 , Stockholm Sweden, 14-18 Jun., 2009.

  • Vibration analyses and rapid energy transfer in pi-conjugated dendrimers having oligo phenylenevinylene antennas

    T. Shimamoto, K. Miyanari, A. Fujii, I. Akai, M. Kimura

    International Dendrimer Symposium 2009 (IDS:6), Poster 3.10 , Stockholm Sweden, 14-18 Jun., 2009.

  • Ab initio study of light-harvesting antennas of poly(benzyl ether) dendrimers

    S.Koga, F.Shimojo, I.Akai

    International Dendrimer Symposium 2009 (IDS:6), Poster 3.11 , Stockholm Sweden, 14-18 Jun., 2009.


 2008

  • Rapid energy transfer in a dendrimer having pi-conjugated light-harvesting antennas   (invited paper)

    I. Akai, K. Miyanari, T. Shimamoto, A. Fujii, H. Nakao, A. Okada, K. Kanemoto, T. Karasawa, H. Hashimoto, A. Ishida, A. Yamada, I. Katayama, J. Takeda, M. Kimura

    New J. Phys., 10 (Special Issue " Molecular electronics ") 125024, (2008).   Go

  • Energy transfer in light-harvesting small dendrimers having pi-conjugated aromatic rings

    I. Akai, T. Shimamoto, A. Fujii, K. Kanemoto, T. Karasawa, H. Hashimoto, I. Katayama, J. Takeda, M. Kimura

    Physics Reports of Kumamoto University, 13, 115-136 (2008).   Go

  • Energy Transfer Dynamics in Wire-Type Dendrimers Having Oligophenylene Peripheries

    I. Akai, M. Higuchi, K. Kanemoto, T. Karasawa, H. Hashimoto, M. Kimura

    J. Lumin. 128, 948-951 (2008).   Go

  • Time-frequency two-dimensional mapping of rapid energy transfer in light-harvesting starshaped dendrimers

    A. Ishida, Y. Makishima, A. Okada, I. Akai, K. Kanemoto, T. Karasawa, M. Kimura, J. Takeda

    J. Lumin. 128, 771-773 (2008).   Go


International Conferences

  • Rapid energy transfer in dendrimers having pi-conjugated light-harvesting antennas

    I. Akai

    The Kumamoto International Symposium on Recent Advancement of Physics and Chemistry of New Materials , Kumamoto Japan, 14 Sep., 2008.

  • Rapid energy transfer and its temperature dependence in pi-conjugated dendrimers

    I. Akai, H. Nakao, A. Okada, K. Kanemoto, T. Karasawa, A. Ishida, A. Yamada, I. Katayama, J Takeda, M Kimura

    The 8th International Conference on Excitonic Processes in Condensed Matter, EXCON'08 , Kyoto Japan, 22-27 June, 2008.

  • Temperature dependence of intrachain photoluminescence of a long oligothiophene

    K. Kanemoto, I. Akai, H. Hashimoto, T. Karasawaa, N. Negishi, Y. Aso

    The 8th International Conference on Excitonic Processes in Condensed Matter, EXCON'08 , Kyoto Japan, 22-27 June, 2008.

  • Energy transfer dynamics in light-harvesting small dendrimers studied by time-frequency two-dimensional imaging spectroscopy

    A. Yamada, A. Ishida, I. Akai, M. Kimura, I. Katayama, J. Takeda

    The 15th International Conference on Luminescence and Optical Spectroscopy of Condensed Matter (ICL'08) , Lyon France, 7-11 July, 2008.

  • Intrachain Photoluminescence Dynamics of a Long Oligothiophene at Room Temperature

    K. Kanemoto, M. Sugisaki, H. Hashimoto, I. Akai, T. Karasawa, N. Negishi, Y. Aso

    The 15th International Conference on Luminescence and Optical Spectroscopy of Condensed Matter (ICL'08) , Lyon France, 7-11 July, 2008.


 2007

  • Energy transfer dynamics in wire-type dendrimers having oligophenylene antenna

    I. Akai, M. Higuchi, K. Kanemoto, T. Karasawa, H. Hashimoto, M. Kimura

    Cryogenics Report of Kumamoto University 18, 83-87 (2007).

  • Temperature dependence of excitonic energy transfer in light-harvesting dendrimers

    I. Akai, T. Kato, A. Okada, K. Kanemoto, T. Karasawa, M. Kimura, M. Ohashi, S. Shinoda, H. Tuskube

    Cryogenics Report of Kumamoto University 18, 93-94 (2007).

  • Rapid energy transfer in light-harvesting dendrimers having pi-conjugated antennas

    I. Akai, H. Nakao, A. Okada, K. Kanemoto, T. Karasawa, H. Hashimoto, A. Ishida, Y. Makishima, J. Takeda, M. Kimura

    Cryogenics Report of Kumamoto University 18, 95-125 (2007).

  • Intrachain Photoluminescence Dynamics of MEH-PPV in the Solid State

    K. Kanemoto, Y. Imanaka, I. Akai, M. Sugisaki, H. Hashimoto, T. Karasawa

    J. Phys. Chem. B 111, 12389-12394 (2007).   Go

  • Radiative and non-radiative processes of Ag- centres doped in NaCl single crystals

    T. Kawai, I. Akai, T. Karasawa, S. Hashimoto

    J. Phys.: Condens. Matter 19, 136212 (2007).   Go

  • Exciton and Intracenter Radiative Recombination in ZnMnTe and CdMnTe Quantum Wells with Optically Active Manganese Ions

    V.F.Agekyan, I.Akai, N.N.Vasilev, T.Karasawa, G.Karczewski, A.Yu.Serov, N.G.Filosofov

    Physics of the Solid State 49, 1175-1183 (2007).   Go

  • Mn+2 and band exciton luminescence in ZnMnTe/ZnMgTe quantum well structures

    V.F. Agekyan, I. Akai, N.G. Filosofov, T. Karasawa, G. Karczewski, A. Yu. Serov, N.N. Vasiliev

    phys. stat. solidi (b) 244, 3265-3270 (2007).   Go


International Conferences

  • Energy Transfer Dynamics in Wire-Type Dendrimers Having Oligophenylene Peripheries

    I. Akai, M. Higuchi, K. Kanemoto, T. Karasawa, H. Hashimoto, M. Kimura

    16th International Conference on Dynamical Processes in Excited States Of Solids, DPC 07 , WeP4-37, Segovia Spain, 17-22 June, 2007.

  • Time-frequency two-dimensional mapping of rapid energy transfer in light-harvesting starshaped dendrimers

    A. Ishida, Y. Makishima, A. Okada, I. Akai, K. Kanemoto, T. Karasawa, M. Kimura, J. Takeda

    16th International Conference on Dynamical Processes in Excited States Of Solids, DPC 07 , Tu-P2-06, Segovia Spain, 17-22 June, 2007.

  • Temperature dependence of excitonic energy transfer in light-harvesting dendrimers

    I. Akai, T. Kato, A. Okada, K. Kanemoto, T. Karasawa, M. Kimura, M. Ohashi, S. Shinoda, H. Tsukube

    5th International Dendrimer Symposium IDS:5 , , Toulouse France, 28 Agu.- 1 Sep., 2007.


 2006

  • Depression of excitonic energy transfer by freezing molecular vibrations in meta-linked branching dendrimers

    I. Akai, T. Kato, A. Okada, K. Kanemoto, T. Karasawa, M. Kimura, M. Ohashi, S. Shinoda, H. Tsukube

    phys. stat. solidi (c) 3, pp.3414-3419 (2006).   Go

  • Morphology dependence of excitonic energy transfer in lightharvesting dendrimers having benzyl ether-type peripheries

    I. Akai, T. Kato, K. Kanemoto, T. Karasawa, M. Ohashi, S. Shinoda, and H. Tsukube

    phys. stat. solidi (c) 3, pp. 3420-3425 (2006).   Go

  • Intrachain photoluminescence properties of conjugated polymers as revealed by long oligothiophenes and polythiophenes diluted in an inactive solid matrix

    K. Kanemoto, T. Sudo, I. Akai, H. Hashimoto, T. Karasawa, Y. Aso, T. Otsubo

    Phys. Rev. B73, pp.235203-1-11 (2006).   Go

  • Quenching of energy transfer by freezing molecular vibrations in light-harvesting small dendrimer

    I. Akai, A. Okada, K. Kanemoto, T. Karasawa, H. Hashimoto, M. Kimura

    J. Lumin., 119-120, pp.283-287 (2006).   Go


International Conferences

  • Depression of excitonic energy transfer by freezing molecular vibrations in meta-linked branching dendrimers

    I. Akai, T. Kato, A. Okada, K. Kanemoto, T. Karasawa, M. Kimura, M. Ohashi, S. Shinoda, H. Tsukube

    The 7th International Conference on Excitonic Processes in Condensed Matter (EXCON'06) 26-30 June 2006, Thu 29, 1-Plenary G-2, Wake Forest University, Winston Salem, North Carolina, USA

  • Morphology dependence of excitonic energy transfer in light harvesting dendrimers having benzyl ether-type peripheries

    I. Akai, T. Kato, K. Kanemoto, T. Karasawa, M. Ohashi, S. Shinoda, H. Tsukube

    The 7th International Conference on Excitonic Processes in Condensed Matter (EXCON'06) 26-30 June 2006, Mon 26, 4-Poster, Wake Forest University, Winston Salem, North Carolina, USA

  • Exciton and Mn2+ intracenter luminescence in ZnMnTe/ZnMgTe heterostructures under high optical excitation

    V. F. Agekyan, I. Akai, N. G. Filosofov, T. Karasawa, G. Karczewski, A. Yu. Serov, N. N. Vassiliev

    14th Int. Symp. "Nanostructures: Physics and Technology" St Petersburg, Russia, June 26-30, 2006


 2005

  • Effect of the dilution in polypropylene on photophysical properties of poly(3-alkylthiophenes)

    K. Kanemoto, M. Shishido, T. Sudo, I. Akai, T. Karasawa, Y. Agari

    Synth. Met., 155, pp.162-167 (2005).   Go

  • Rapid energy transfer in light-harvesting small dendrimers

    I. Akai, H. Nakao, K. Kanemoto, T. Karasawa, H. Hashimoto, M. Kimura

    J. Lumin. 112 pp.449-453, (2005).   Go

  • Structure Study and Luminescence Thermochromism in Hexanuclear 6-Methyl-2-Pyridinethiolato Copper(I) Crystals

    H. Xie, I. Kinoshita, T. Karasawa, K. Kimura, T. Nishioka, I. Akai, K. Kanemoto,

    J. Phys. Chem. B 109 pp.9339-9345, (2005).   Go

  • Concentration-dependence of photoluminescence properties in polythiophene diluted in an inactive polymer matrix

    K. Kanemoto, M. Shishido, T. Sudo, I. Akai, H. Hashimoto, T. Karasawa,

    Chem. Phys. Lett. 402 pp.549-553, (2005).   Go


International Conferences

  • Quenching of Energy Transfer by Freezing of Molecular Vibrations in Light Harvesting Nanostar Dendrimer

    I. Akai, A. Okada, K. Kanemoto, T. Karasawa, H. Hashimoto, M. Kimura

    4th International Dendrimer Symposium (IDS-4), 21 May, Track B (Photonics, Electronics 10:30), Mt. Pleasant Michigan, USA, 18-21 May, 2005.

  • Quenching of Energy Transfer by Freezing Molecular Vibrations in Light Harvesting Small Dendrimer

    I. Akai, A. Okada, K. Kanemoto, T. Karasawa, H. Hashimoto, M. Kimura

    International Conference on Dynamical Processes in Excited States of Solids 2005 (DPC'05), , Shanghai, China, 1 - 5 Aug. 2005.


 2004

  • Photocalorimetric study on nonradiative relaxation processes and photoluminescence quantum yields in Alq3 single crystals

    I. Akai, K. Harai, K. Kouno, T. Karasawa

    J. Lumin. 108, pp.11-14 (2004).   Go

  • Luminescence processes of hexanuclear methylpyridinethiolato-copper (I) crystals

    H. Xie, M. Tougezaka, S. Oishi, I. Kinoshita, K, Kanemoto, I. Akai, T. Karasawa

    J. Lumin. 108, pp.91-95 (2004).   Go

  • Luminescence of Stepped Quantum Wells in GaAs/GaAlAs and InGaAs/GaAs/GaAlAs Structures

    V. F. Agekyan, Yu. A. Stepanov, I. Akai, T. Karasava, L. E. Vorob'ev, D. A. Firsov, A. E. Zhukov, V. M. Ustinov, A. Zeilmeyer, S. Shmidt, S. Hanna, E. Zibik,

    Semiconductors 38, pp. 565-571, (2004).   Go


International Conferences

  • Exciton Dynamics in CdTe/ZnTe Quantum Dots Grown by Hot-Wall Expitaxy

    I. Akai, K. Watanabe, K. Yamashita, K. Kanemoto, T. Karasawa, H. Hashimoto

    6th International Conference on Excitonic Processes in Condensed Matter, 6-9 July 2004, Cracow, Poland

  • Rapid Energy Transfer in Light-Harvesting Small Dendrimers

    I. Akai, H. Nakao, K. Kanemoto, T. Karasawa, H. Hashimoto, M. Kimura

    6th International Conference on Excitonic Processes in Condensed Matter, 6-9 July 2004, Cracow, Poland


 2003

  • Morphology and Optical Spectra of Metal Iodate Microcrystals

    V. F. Agekyan, I. Akai, and T. Karasawa

    Physics of the Solid State, 45, pp.1170-1176 (2003).   Go

  • Dynamical Processes of High-Density Excitons in GaSe Crystals

    A. Tanji, H. Xie, I. Akai, T. Karasawa, V. F. Aguekian

    J. Phys. Soc. Jpn. 72, pp.2646-2655 (2003).   Go


International Conferences

  • Photocalorimetric study on nonradiative relaxation processes and photoluminescence quantum yields in Alq3 single crystals

    I. Akai, K. Harai, K. Kouno, T. Karasawa

    International Conference on Dynamical Processes in Excited States of Solids 2003 (DPC'03), Th10, Christchurch, New Zealand, 3 - 8 Aug. 2003.

  • Luminescence processes of hexanuclear methylpyridinethiolato-copper (I) crystals

    H. Xie, M. Tougezaka, S. Oishi, I. Kinoshita, K, Kanemoto, I. Akai, T. Karasawa

    International Conference on Dynamical Processes in Excited States of Solids 2003 (DPC'03), P-30, Christchurch, New Zealand, 3 - 8 Aug. 2003.

  • Dynamical energy flows in star-shaped stilbenoid phthalocyanines

    I. Akai, H. Nakao, K. Kanemoto, T. Karasawa, H. Hashimoto, M. Kimura,

    3rd International Dendrimer Symposium (IDS-3), Sep.19 Part II 16.35, Berlin Germany, 17-20 Sep. 2003.


 2002

  • Spatial Evolution of Inelastic Scattering of High-Density Excitons in GaSe Crystals

    A. Tanji, I. Akai, T. Karasawa, and V. F. Aguekian

    J Lumin. 94-95 pp. 365-368, (2002).   Go

  • Dynamical processes on high density indirect and direct Excitons in AlxGa1-xAs/AlAs quantum wires

    K. Bando, I. Akai, T. Karasawa, K. Maehashi, H. Nakashima

    J Lumin. 94-95 pp. 389-392, (2002).   Go

  • Coherent Motion of High-Density Exciton Masses at a Quasi Two-Dimensional Interface in BiI3

    Y. Shirasaka, A. Tanji, I. Akai, T. Karasawa

    J Lumin. 94-95 pp. 433-436, (2002).   Go

  • Nonlinear Luminescence of Excitons in HgI2 Microcrystallites on Porus Polymers

    I. Akai, A. Yamamoto, T. Karasawa, V. F. Aguekian

    Nonlinear Optics 29 pp.345--350 (2002).   Go

  • Anisotropic Diffusion Behavior of Quasi-one Dimensional Excitons in Al0.2Ga0.8As/AlAs Quantum Wires

    K. Bando, I. Akai, T. Karasawa, K. Maehashi, H. Nakashima

    Nonlinear Optics 29 pp.197--202 (2002).

  • Multiple Exciton Interaction in Condensates of Excitons at a Stacking Fault Interface in BiI3

    A. Tanji, I. Akai, T. Karasawa

    Nonlinear Optics 29 pp.339--344 (2002).   Go

  • Optical Properties of Hexanuclear 6-Methylpyridinethiolato-Copper (I) Crystals

    H. Xie, M. Tougezaka, I. Kinoshita, K, Kanemoto, I. Akai, T. Karasawa

    Nonlinear Optics 29 pp.647--654 (2002).   Go

  • High-density effects on the exciton systems and their dynamical behavior in AlxGa1-xAs/AlAs Quantum Wires

    K. Bando, I. Akai, T. Karasawa, K. Maehashi, H. Nakashima

    Phase Transition 75, pp.1011-1018 (2002).   Go

  • Photo-Induced High-Density Phases of Exciton-Polariton Masses and Their Coherent Propagation at Stacking Fault Interface in BiI3

    T. Karasawa, A.Tanji, I.Akai

    Phase Transition 75, pp.707--714 (2002).   Go


International Conferences

  • Nonlinear Luminescence of Excitons in HgI2 Microcrystallites on Porus Polymers

    I. Akai, A. Yamamoto, T. Karasawa, V. F. Aguekian

    5th International Conference Excitonic Processes in Condensed Matter EXCON 2002, XXX, Darwin Australlia, 22 - 26 July 2002

  • Anisotropic Diffusion Behavior of Quasi-One Dimensional Excitons in Al0.2Ga0.8As/AlAs Quantum Wires

    K. Bando, I. Akai, T. Karasawa, K. Maehashi, H. Nakashima

    5th International Conference Excitonic Processes in Condensed Matter EXCON 2002, XXX, Darwin Australlia, 22 - 26 July 2002

  • Multiple Exciton Interaction in Condensates of Excitons at a Stacking Fault Interface in BiI3

    A.Tanji, I.Akai, and T.Karasawa

    5th International Conference Excitonic Processes in Condensed Matter EXCON 2002, XXX, Darwin Australlia, 22 - 26 July 2002

  • Optical Properties of Hexanuclear 6-Methylpyridinethiolato-Copper (I) Crystals

    H. Xie, M. Tougezaka, I. Kinoshita, K, Kanemoto, I. Akai, T. Karasawa

    5th International Conference Excitonic Processes in Condensed Matter EXCON 2002, XXX, Darwin Australlia, 22 - 26 July 2002


 2001

  • High Density Excitation Effects on Excitons and Electron-Hole Pairs in AlxGa1-xAs/AlAs Quantum Wires

    K. Bando, I. Akai, T. Karasawa, K.Inoue, H. Nakashima

    International Journal of Modern Physics B 15 pp.3757-3761 (2001).   Go

  • Photoluminescence and Dynamics of Excitons in Alq3 Single Crystals

    Y. Kawasumi, I. Akai, T. Karasawa

    International Journal of Modern Physics B 15 pp.3825-3828 (2001).   Go

  • Spatial Behavior of Exciton-Polariton Masses in a Layered Crystal BiI3    (invited)

    Y. Shirasaka, H. Mino, T. Kawai, I. Akai, T. Karasawa

    International Journal of Modern Physics B 15 pp.3960-3964 (2001).   Go


International Conferences

  • Spatial Evolution of Inelastic Scattering of High-Density Excitons in GaSe Crystals

    A. Tanji, I. Akai, T. Karasawa, and V. F. Aguekian

    International Conference on Dynamical Processes in Excited States of Solids (DPC'01), July 1-4, 2001, Lyon Frace, P155, (2001)

  • Dynamical processes on high density indirect and direct Excitons in AlxGa1-xAs/AlAs quantum wires

    K. Bando, I. Akai, T. Karasawa, K. Maehashi, H. Nakashima

    International Conference on Dynamical Processes in Excited States of Solids (DPC'01), July 1-4, 2001, Lyon Frace, P161, (2001)

  • Coherent Motion of High-Density Exciton Masses at a Quasi Two-Dimensional Interface in BiI3

    Y. Shirasaka, A. Tanji, I. Akai, T. Karasawa

    International Conference on Dynamical Processes in Excited States of Solids (DPC'01), July 1-4, 2001, Lyon Frace, P171, (2001)

  • High-density effects on the exciton systems and their dynamical behavior in AlxGa1-xAs/AlAs Quantum Wires

    K. Bando, I. Akai, T. Karasawa, K. Maehashi, H. Nakashima

    International Conference on "Photoinduced Phase Transitions, their Dynamics and Precursor" (Nov. 14-16. 2001, Tsukuba Japan) P02, (2001)

  • Photo-Induced High-Density Phases of Exciton-Polariton Masses and Their Coherent Propagation at Stacking Fault Interface in BiI3

    T. Karasawa, A.Tanji, I.Akai

    International Conference on "Photoinduced Phase Transitions, their Dynamics and Precursor" (Nov. 14-16. 2001, Tsukuba Japan) O05, (2001)


 2000

  • Exciton Transitions of Hexagonal CuI Microcrystallites Grown on Polymers

    A. Tanji, I. Akai, K. Kojima, T. Karasawa, T. Komatsu

    J. Lumin., 87-89, pp. 516-518(2000)   Go

  • Space-Resolved Luminescence and Degenerate Four-Wave-Mixing Spectra of Heavily Photo-Created Exciton States in a Layered Crystal GaSe

    M. Yamamoto, H. Mino, I. Akai, T. Karasawa, V.F. Aguekian

    J. Lumin., 87-89, pp. 275-277(2000)   Go

  • Anormalous Behavior of The High Density Excitons and Their Nonlinear Optical Response in a Quasi Two-Dimensional Space in Layered Crystal BiI3

    H. Mino, M. Yamamoto, T. Kawai, I. Akai, T. Karasawa

    J. Lumin., 87-89, pp. 278-280(2000)   Go

  • Optical Properties of AlxGa1-xAs/AlAs Quantum Wires under High Density Excitation

    K. Bando, I. Akai, T. Karasawa, K.Inoue, H. Nakashima

    Memories of The Institute of Scientific and Industrial Research, Osaka University, Special Issue, 57, pp. 281-282(2000)


International Conferences

  • Optical Properties of AlxGa1-xAs/AlAs Quantum Wires under High Density Excitation

    K. Bando, I. Akai, T. Karasawa, K.Inoue, H. Nakashima

    The third SANKEN International Symposium "Advanced Nanoelectronics: Devices, Materials, and Computing" March 14-15, 2000, SANKEN Osaka University.

  • High Density Excitation Effects on Excitons and Electron-Hole Pairs in AlxGa1-xAs/AlAs Quantum Wires

    K. Bando, I. Akai, T. Karasawa, K.Inoue, H. Nakashima

    Yamada Conference LIII 2000 International Conference on Excitonic Processes in Condensed Matter, D-05, p-25 August 22-25, 2000, Osaka City University.

  • Photoluminescence and Dynamics of Excitons in Alq3 Single Crystals

    Y. Kawasumi, I. Akai, T. Karasawa

    Yamada Conference LIII 2000 International Conference on Excitonic Processes in Condensed Matter, D-26, p-46 August 22-25, 2000, Osaka City University.

  • Spatial Behavior of Exciton-Polariton Masses in a Layered Crystal BiI3   (invited)

    Y. Shirasaka, H. Mino, T. Kawai, I. Akai, T. Karasawa

    Yamada Conference LIII 2000 International Conference on Excitonic Processes in Condensed Matter, K-17, p-112 August 22-25, 2000, Osaka City University.


 1999

  • A Study of Hight Density Excitons and their Spatial Correlation in a Two-Dimensional Space of a Planar Defect in BiI3

    H. Mino, T. Kawai, I. AKai, T. Karasawa

    Proceedings of the Third International Conference on Excitonic Processes in Condensed Matter, the Electrochemical Society, Inc., Proceedings 98-25, Editors: R. T. Williams, W. M. Yen, ISBN 1-56677-219-2, pp.304-309, (1999)


International Conferences

  • Multi-Exciton Excitation and Ceasing of Lattice Relaxation in Microcrystallites of BiI3 Embedded in CdI2 Matrices

    Y. Shirasaka, Y. Ogawa, D. Kim, I. Akai, T. Karasawa, T. Komatsu

    1999 International Conference on Luminescence and Optical Spectroscopy of Condensed Matter ICL'99, (Aug. 23-27, 1999, Osaka IHO / Japan) PA2-19

  • Exciton Transitions of Hexagonal CuI Microcrystallites Grown on Polymers

    A. Tanji, I. Akai, K. Kojima, T. Karasawa, T. Komatsu

    1999 International Conference on Luminescence and Optical Spectroscopy of Condensed Matter ICL'99, (Aug. 23-27, 1999, Osaka IHO / Japan) PA3-28

  • Space-Resolved Luminescence and Degenerate Four-Wave-Mixing Spectra of Heavily Photo-Created Exciton States in a Layered Crystal GaSe

    M. Yamamoto, H. Mino, I. Akai, T. Karasawa, V.F. Aguekian

    1999 International Conference on Luminescence and Optical Spectroscopy of Condensed Matter ICL'99, (Aug. 23-27, 1999, Osaka IHO / Japan) PB3-2

  • Anormalous Behavior of The High Density Excitons and Their Nonlinear Optical Response in a Quasi Two-Dimensional Space in Layered Crystal BiI3

    H. Mino, M. Yamamoto, T. Kawai, I. Akai, T. Karasawa

    1999 International Conference on Luminescence and Optical Spectroscopy of Condensed Matter ICL'99, (Aug. 23-27, 1999, Osaka IHO / Japan) PB3-3


 1998

  • Spatial Propagation of Quasi Two-Dimensional Excitons in a Layered Crystal BiI3 under the High-Density Excitation

    H. Mino, T. Kawai, I.Akai, T.Karasawa

    J. Lumin., 76 & 77 pp.109-112, (1998)   Go


International Conferences

  • A Study of Hight Density Excitons and their Spatial Correlation in a Two-Dimensional Space of a Planar Defect in BiI3

    H. Mino, T. Kawai, I. AKai, T. Karasawa

    the Third International Conference on Excitonic Processes in Condensed Matter EXCON'98, (Nov. 1-5, 1998, the Sheraton Boston Hotel / U.S.A.)


 1997

  • Coherent and InCoherent Transport Properties of Excitons at High Density at a Quasi Two-Dimensional Space of a Stacking Disorder Interface in a Layered Crystal BiI3

    T. Karasawa, T. Kawai, I. Akai, and T.Komatsu

    J. Lumin. 72-74 pp.876-878, (1997)   Go


International Conferences

  • Spatial Propagation of Quasi Two-Dimensional Excitons in a Layered Crystal BiI3 under the High-Density Excitation

    H. Mino, T. Kawai, I.Akai, T.Karasawa

    Proceedings of the 11th International Conference on Dynamical Processes in Excited States of Solids. P012 (1997, Mittelberg, Austria/Germany)


 1996

  • Exciton Transitions and Exciton-Phonon Interaction in Nanostructures of Layered Metal Tri-Iodide

    D. Kim, T. Karasawa, I. Akai, T. Komatsu

    Proceedings of the 2nd Int. Conf. on Excitonic Processes in Cond. Matter p.139-142, (1996)

  • Exciton Transitions in Growth-Rate Controlled Thin Films and Heterostructures Made of Layered Semiconductors

    I. Akai, D. Kim, T. Karasawa, T. Komatsu

    Proceedings of the 2nd Int. Conf. on Excitonic Processes in Cond. Matter p.131-134, (1996)

  • Optical Properties of Nanostructures in Layered Metal Tri-Iodide Crystals

    T. Komatsu, T.Karasawa, I. Akai, T.Iida

    J. Lumin. 70 p.448-467, (1996)   Go

  • Size Effects of Excitons of BiI3 in Layered Matrices

    T. Komatsu, D. Kim, T. Kobayashi, K. Watanabe, V. F. Aguekian, T. Karasawa, I. Akai, T. Iida

    Surf. Rev. Lett. 3 p.1127-1131, (1996)   Go

  • Space- and Time-Resolved Study of the Nonlinear Optical Responses on the Exciton in a Quasi Two Dimensional System in BiI3

    T. Karasawa, I. Akai, T. Kawai, H. Kondo, H. Mino, T. Komatsu

    Prog. Cryst. Growth & Characterization Materials 33 p.97-100, (1996)   Go

  • Optical Spectra in The BiI3/CdI2:Cryolite Heterostructures

    I. Akai, T. Karasawa, T. Komatsu

    Proceedings of The 2nd Asia Symposium on Condensed Matter Photophysics, p.157-160, (1996)

  • Exciton Transitions and Thier Relaxation Processes in Layered Semiconductors GaS

    F. Yasuhara, T. Karasawa, I. Akai, T. Komatsu, V. F. Aguekian

    Proceedings of The 2nd Asia Symposium on Condensed Matter Photophysics, p.161-164, (1996)

  • Dynamical and Spatial Behavior of Quasi Two Dimensional Excitons in a Layered Crystal BiI3 under High Density Exciation

    H. Mino, T. Kawai, I. Akai, T. Karasawa, T. Komatsu

    Proceedings of The 2nd Asia Symposium on Condensed Matter Photophysics, p.169-172, (1996)

  • Optical Spectra of Lead Iodide Microcrystals in Porous Glass Matrix

    V. F. Aguekian, A. Serov, T. Komatsu, T. Karasawa, I. Akai

    Proceedings of The 2nd Asia Symposium on Condensed Matter Photophysics, p.173-176, (1996)

  • Production of Nanoscale Particles of the Metal Embedded onto the Semiconductor Surface and Their Enhancement of the Photocatalytic Activity

    H. Doi, T. Komatsu, T. Karasawa, I. Akai, T. Kobayashi, Y. Okamoto

    Proceedings of The 2nd Asia Symposium on Condensed Matter Photophysics, p.177-180, (1996)


International Conferences

  • Exciton Transitions and Exciton-Phonon Interaction in Nanostructures of Layered Metal Tri-Iodide

    D. Kim, T. Karasawa, I. Akai, T. Komatsu

    EXCON'96,the 2nd Int. Conf. on Excitonic Processes in Cond. Matter, Gohrischer Hof, Germany, Aug.14-17 (1996)

  • Exciton Transitions in Growth-Rate Controlled Thin Films and Heterostructures Made of Layered Semiconductors

    I. Akai, D. Kim, T. Karasawa, T. Komatsu

    EXCON'96,the 2nd Int. Conf. on Excitonic Processes in Cond. Matter, Gohrischer Hof, Germany, Aug.14-17 (1996)

  • Coherent and Incoherent Transport Properties of Excitons at High Density at a Quasi Two Dimensional Space of a Stacking Disorder Interface

    T. Karasawa, T. Kawai, H. Mino, I. Akai, T. Komatsu

    ICL'96, Int. Conf. on Lumin. and Opt. Spectroscopy of Condensed Matter, Prague, Czech Republic, Aug.18-23 (1996)

  • Optical Spectra in The BiI3/CdI2:Cryolite Heterostructures

    I. Akai, T. Karasawa, T. Komatsu

    The 2nd Asia Symposium on Condensed Matter Photophysics, Nara Japan, Nov.1-2, (1996)

  • Exciton Transitions and Thier Relaxation Processes in Layered Semiconductors GaS

    F. Yasuhara, T. Karasawa, I. Akai, T. Komatsu, V. F. Aguekian

    The 2nd Asia Symposium on Condensed Matter Photophysics, Nara Japan, Nov.1-2, (1996)

  • Dynamical and Spatial Behavior of Quasi Two Dimensional Excitons in a Layered Crystal BiI3 under High Density Exciation

    H. Mino, T. Kawai, I. Akai, T. Karasawa, T. Komatsu

    The 2nd Asia Symposium on Condensed Matter Photophysics, Nara Japan, Nov.1-2, (1996)

  • Optical Spectra of Lead Iodide Microcrystals in Porous Glass Matrix

    V. F. Aguekian, A. Serov, T. Komatsu, T. Karasawa, I. Akai

    The 2nd Asia Symposium on Condensed Matter Photophysics, Nara Japan, Nov.1-2, (1996)

  • Production of Nanoscale Particles of the Metal Embedded onto the Semiconductor Surface and Their Enhancement of the Photocatalytic Activity

    H. Doi, T. Komatsu, T. Karasawa, I. Akai, T. Kobayashi, Y. Okamoto

    The 2nd Asia Symposium on Condensed Matter Photophysics, Nara Japan, Nov.1-2, (1996)


 1995

  • Polarization Characteristics of Excitons Localized at Stacking Fault in BiI3 Layered Crystals

    T.Komatsu, T.Iida, I.Akai, T.Aikami, V.F.Agekyan

    Phys. Solid State 37 p.1332-1337 (1995)

  • Dynamical Process of Excitons under Magnetic Fields in GaAs/(AlGa)As Superlattice

    T.Komatsu, E.Kawahata, T.Karasawa, I.Akai, V.F.Aguekian, M.Nakayama, K.Uchida, N.Miura

    J. Lumin., 66&67 p.468-472, (1995)   Go

  • Lateral Transport and Dynamical Behavior of Quasi Two-Dimensional Excitons at High Density along a Stacking Disorder Plane in Layered BiI3

    H.Kondo, T.Kawai, T.Karasawa, I.Akai, T.Komatsu

    J. Lumin., 66&67 p.448-452, (1995)   Go

  • Dynamical Properties of Confined Excitons in BiI3 Microcrystallites and Ultra-Thin Films Embedded in CdI2 Matrices

    D.Kim, T.Karasawa, I.Akai, T.Komatsu, T.Kobayashi

    J. Lumin., 66&67 p.443-447, (1995)   Go

  • Nonlinear Optical Spectra of the Confined Excitons in Stress Induced Nanostructures in BiI3

    I.Akai, T.Karasawa, T.Komatsu, S.Iwai, K.Edamatsu, T.Itoh, S.Yano, T.Goto

    Jpn J. Appl. Phys. 34 Suppl.34-1 (1995) 113-115   Go

  • Raman Scattering and Electronic Structures under Hydrostatic Pressures in Layered MI3 (M=Bi, Sb, As) Crystals

    A.Sitoh, E.Kawahata, T.Komatsu, I.Akai, T.Karasawa, H.Kurisu, H.Ohtake, T.Suemoto

    Proceeding of the Asia Symposium on Solid State Photophysics, Nara 1995, (1995) 189-192

  • Dynamical and Spatial Behavior of Quasi Two-Dimensional Excitons in a Layered Crystal BiI3 under High Density Excitation

    T.Kawai, H.Kondo, I.Akai, T.Karasawa, T.Komatsu

    Proceeding of the Asia Symposium on Solid State Photophysics, Nara 1995, (1995) 225-228

  • Dynamical Process of Free Exciton Magnetic Polarons in Diluted Magnetic Semiconductor CdMnTe Observed by a Weak excitation Time-Resolved Photoluminescence

    S.Takeyama, S.Adachi, Y.Takagi, T.Karasawa, I.Akai, T.Komatsu, V.F.Aguekian

    Proc. of The Workshop on Highlights of Light Spectroscopy on Semiconductors, p.289-291 (1995)


International Conferences

  • Dynamical Process of Free Exciton Magnetic Polarons in Diluted Magnetic Semiconductor CdMnTe Observed by a Weak excitation Time-Resolved Photoluminescence

    S.Takeyama, S.Adachi, Y.Takagi, T.Karasawa, I.Akai, T.Komatsu, V.F.Aguekian

    The Workshop on Highlights of Light Spectroscopy on Semiconductors, 1995 Frascati

  • Raman Scattering and Electronic Structures under Hydrostatic Pressures in Layered MI3 (M=Bi, Sb, As) Crystals

    A.Sitoh, E.Kawahata, T.Komatsu, I.Akai, T.Karasawa, H.Kurisu, H.Ohtake, T.Suemoto

    The Asia Symposium on Solid State Photophysics, Nara 1995

  • Dynamical and Spatial Behavior of Quasi Two-Dimensional Excitons in a Layered Crystal BiI3 under High Density Excitation

    T.Kawai, H.Kondo, I.Akai, T.Karasawa, T.Komatsu

    The Asia Symposium on Solid State Photophysics, Nara 1995


 1994

  • High Density Exciton Behavior and Bi-Exciton States on the Stacking Fault Exciton in BiI3

    H.Kondo, T.Karasawa, I.Akai, M.Ichida, T.Komatsu

    J. Lumin. 60&61 p.658-660, (1994)   Go

  • Pressure Effects on Excitons, Phonons and Exciton-Phonon Interactions in BiI3 and SbI3 Single Crystals

    H.Kurisu, T.Komatsu, T.Tanaka, I.Akai, T.Karasawa, T.Iida

    J. Lumin. 60&61 p.816-818, (1994)   Go


International Conferences

  • Exciton Spectra in Disk-like Small Particles of BiI3 Embedded in Layered Crystals

    T.Komatsu, D.Kim, T.Kobayashi, T.Karasawa, I.Akai, T.Iida

    7th International Symposium on Small Particles and Inorganic Clusters, (Kobe), (1994)


 1993

  • Nonlinear Optical Spectra of Confined and Localized Excitons in Mesoscopic Domain and Quasi-2D Stacking Fault Interface in BiI3

    I.Akai, H.Kondo, M.Ichida, T.Karasawa, T.Komatsu

    J. de Physique IV Colloque C5, supplement au Journal de Physique II 3 p.433-436 (1993)   Go

  • Exciton Luminescence in Tin Dioxide Single Crystals

    V.F.Aguekian, Y.A.Stepanov, I.Akai, T.Karasawa, T.Komatsu

    J. Phys. Soc. Jpn 62 p.4516-4521 (1993)   Go


International Conferences

  • Nonlinear Optical Spectra of Confined and Localized Excitons in Mesoscopic Domain and Quasi-2D Stacking Fault Interface in BiI3

    I.Akai, H.Kondo, M.Ichida, T.Karasawa, T.Komatsu

    3rd International Conference on Optics of Excitons in Confined Systems, 1993 Montpellier France

  • High Density Exciton Behavior and Bi-Exciton States on the Stacking Fault Exciton in BiI3

    H.Kondo, T.Karasawa, I.Akai, M.Ichida, T.Komatsu

    The International Conference on Luminescence '93, 1993 Connecticut USA

  • Pressure Effects on Excitons, Phonons and Exciton-Phonon Interactions in BiI3 and SbI3 Single Crystals

    H.Kurisu, T.Komatsu, T.Tanaka, I.Akai, T.Karasawa, T.Iida

    The International Conference on Luminescence '93, 1993 Connecticut USA


 1992

  • Optical Stark Effects on the Stacking Fault Excitons in BiI3   (invited paper)

    I.Akai, T.Karasawa, T.Komatsu

    International J. of Nonlinear Opt. Phys. Mater.1 p.311-337 (1992)   Go

  • Picosecond Time Resolved Spectra of the Optical Stark Effects on the Stacking Fault Excitons in BiI3 Crystals

    I.Akai, K.Nakajima, T.Karasawa, M.Ichida, T.Komatsu

    Mol. Cryst. Liq. Cryst. 218 p.25-30 (1992)   Go

  • Excitons Localized in Mesoscopic Domains Produced by Stacking Fault in BiI3

    T.Komatsu, T.Iida, K.Murayama, M.Ichida, H.Kurisu, H.Kondo, I.Akai, T.Karasawa

    Mol. Cryst. Liq. Cryst. 218 p.37-42 (1992)   Go

  • Optical Nonlinear Effects of the Stacking Fault Excitons in BiI3

    I.Akai, K.Nakajima, M.Ichida, T.Karasawa, T.Komatsu

    Proceeding of the 2nd Taiwan-Japan Workshop on Solid State Optical Spectroscopy 1992 Osaka, p.176-179 (1992)


International Conferences

  • Optical Nonlinear Effects of the Stacking Fault Excitons in BiI3

    I.Akai, K.Nakajima, M.Ichida, T.Karasawa, T.Komatsu

    The 2nd Taiwan-Japan Workshop on Solid State Optical Spectroscopy, 1992 Osaka Japan


 1991

  • Optical Stark Effects in the Multiple Exciton States at a Stacking-Fault Plane in BiI3 Crystals

    I.Akai, T.Karasawa, T.Komatsu, Y.Kaifu

    Phys. Rev. B43 p.4484-4487 (1991) Go

  • Nonlinear Optical Properties of BiI3 Crystals

    T.Karasawa, I.Akai, T.Komatsu

    Nonlinear Optics 1 p.51-59 (1991)

  • Observation of Propagation of Exciton-Polaritons along Stacking Fault Plane in Layered Crystal BiI3

    T.Kawai, S.Shimanuki, T.Karasawa, I.Akai, T.Iida, T.Komatsu

    J. Lumin. 48-49 Part.2 pp. IN9-IN10 (1991) Go

  • Ultrafast Nonlinear Optical Response and High Density Excitation Effects of the Stacking Fault Exciton in BiI3

    T.Karasawa, M.Ichida, I.Akai, T.Komatsu

    Appl. Phys. A53 p.480-490 (1991) Go


International Conferences

  • Picosecond Time Resolved Spectra of the Optical Stark Effects on the Stacking Fault Excitons in BiI3 Crystals

    I.Akai, K.Nakajima, T.Karasawa, M.Ichida, T.Komatsu

    5th International Symposium on Unconventional Photoactive Solids. Molecular Systems, 1991 Okazaki Japan

  • Excitons Localized in Mesoscopic Domains Produced by Stacking Fault in BiI3

    T.Komatsu, T.Iida, K.Murayama, M.Ichida, H.Kurisu, H.Kondo, I.Akai, T.Karasawa

    5th International Symposium on Unconventional Photoactive Solids. Molecular Systems, 1991 Okazaki Japan


 1990

  • Temporal Behavior of the Optical Stark Effects on the Stacking Fault Exciton States in BiI3

    I.Akai, T.Karasawa, T.Komatsu

    Digest of Nonlinear Optics: Materials, Phenomena and Devices, 1990 Hawaii USA


International Conferences

  • Temporal Behavior of the Optical Stark Effects on the Stacking Fault Exciton States in BiI3

    I.Akai, T.Karasawa, T.Komatsu

    Nonlinear Optics: Materials, Phenomena and Devices, 1990 Hawaii USA

  • Observation of Propagation of Exciton-Polaritons along Stacking Fault Plane in Layered Crystal BiI3

    T.Kawai, S.Shimanuki, T.Karasawa, I.Akai, T.Iida, T.Komatsu

    The International Conference on Luminescence '90, 1990 Lisbon Portugal


 1989

  • The Photocalorimetric Spectra in Layered BiI3 Single Crystals

    I.Akai, T.Karasawa, Y.Kaifu

    J. Phys. Soc. Jpn 58 p.718-725 (1989) Go

  • Picosecond Studies of Cascade Relaxation Processes among the Stacking Fault Exciton States in Layered BiI3 Single Crystals

    I.Akai, T.Karasawa, Y.Kaifu, A.Nakamura, M.Shimura, M.Hirai

    J. Lumin. 42 p.357-363 (1989) Go

  • Space-Resolved Spectra Due to High Mobile Exciton at the Stacking Fault in BiI3 Crystals

    T.Kawai, I.Akai, T.Karasawa

    J. Phys. Soc. Jpn 58 p.969-977 (1989) Go


 1988

  • Large Optical Nonlinearity of the Two-Dimensional Exciton States at a Stacking Fault Interface in BiI3

    I.Akai, T.Karasawa, T.Komatsu, Y.Kaifu

    phys. stat. sol. (b) 150 p.635-639 (1988) Go

  • The First Observation of k-Space Non-Radiative Process by the Photo-Calorimetric Spectroscopy on the Stacking Fault Excitons

    I.Akai, T.Karasawa, T.Komatsu, Y.Kaifu

    Proceeding of 19th International Conference on Physics of Semiconductors (Inst. of Phys. Polish Academy of Science) 1 p.425-428 (1988)

  • Ultrafast Optical Dephasing of Two-Dimensional Excitons in BiI3

    A.Nakamura, Y.Ishida, T.Yajima, T.Karasawa, I.Akai, Y.Kaifu

    Springer Series in Chemical Physics 48 Ultrafast Phenomena VI, p.266-268. (1988)

  • Space- and Time-Resolved Spectroscopy of the Ultrafast Exciton Motion at a Stacking Fault Interface in Layered BiI3 Crystals

    T.Karasawa, T.Kawai, I.Akai, Y.Kaifu

    Springer Series in Chemical Physics 48 Ultrafast Phenomena VI, p.262-265. (1988)

  • Observation of High Mobile Excitons along the Stacking Fault Plane in BiI3 by Space-Resolved Spectroscopy

    T.Karasawa, T.Kawai, I.Akai, Y.Kaifu

    J. Lumin. 40&41 p.431-432 (1988)   Go


International Conferences

  • Large Optical Nonlinearity of the Two-Dimensional Exciton States at a Stacking Fault Interface in BiI3

    I.Akai, T.Karasawa, T.Komatsu, Y.Kaifu

    International Conference on Optical Nonlinearities and Bistability of Semiconductors, 1988 Berlin East Germany

  • The First Observation of k-Space Non-Radiative Process by the Photo-Calorimetric Spectroscopy on the Stacking Fault Excitons

    I.Akai, T.Karasawa, T.Komatsu, Y.Kaifu

    19th International Conference on the Physics of Semiconductors, 1988 Warsaw Poland

  • Ultrafast Optical Dephasing of Two-Dimensional Excitons in BiI3

    A.Nakamura, Y.Ishida, T.Yajima, T.Karasawa, I.Akai, Y.Kaifu

    Ultrafast Phenomena VI, 1988 Kyoto Japan

  • Space- and Time-Resolved Spectroscopy of the Ultrafast Exciton Motion at a Stacking Fault Interface in Layered BiI3 Crystals

    T.Karasawa, T.Kawai, I.Akai, Y.Kaifu

    Ultrafast Phenomena VI, 1988 Kyoto Japan


       Kumamoto University, Institute of Pulsed Power Science, Physics Labo. for Low Temperature and Optical Processes
                                                      2-39-1 Kurokami, Chuo-ku Kumamoto, 860-8555, Japan                     E-mail :  E-mail