Dephasing of Excitonic Polaritons Confined in GaAs Thin Films
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概要
- 論文の詳細を見る
We report the dephasing of excitonic polaritons due to propagation in GaAs thin films measured using a reflection-type pump--probe technique. The rise time of the transient signal due to the propagation of excitonic polaritons decreases with an increase in temperature. This decrease originates from the dephasing of excitonic polaritons. From the analysis based on exciton--phonon scattering, the interaction with optical phonons mainly characterizes the dephasing process of exciton polaritons. Moreover, the result of the comparison of the temperature dependence of the damping factor estimated from the rise time with that estimated from the photoluminescence width indicates that an interaction with optical phonons in the propagation process is larger than that in the momentum relaxation process.
- Physical Society of Japanの論文
- 2011-03-15
著者
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Watanabe Shingo
Department Of Cardiology Musashino Red Cross Hospital
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Wada Osamu
Department Of Applied Quantum Physics Kyushu University
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Isu Toshiro
Department Of Material Physics Faculty Of Engineering Science Osaka University
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Kita Takashi
Department Of Anesthesiology Osaka Police Hospital
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Kojima Osamu
Department of Electrical and Electronic Engineering, Graduate School of Engineering, Kobe University, 1-1 Rokkodai, Nada, Kobe 657-8501, Japan
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Isu Toshiro
Department of Nano-Technology, Institute of Technology and Science, The University of Tokushima, 2-1 Minamijosanjima-cho, Tokushima 770-8506, Japan
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Wada Osamu
Department of Electrical and Electronic Engineering, Graduate School of Engineering, Kobe University, 1-1 Rokkodai, Nada, Kobe 657-8501, Japan
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Watanabe Shingo
Department of Electrical and Electronic Engineering, Graduate School of Engineering, Kobe University, 1-1 Rokkodai, Nada, Kobe 657-8501, Japan
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Watanabe Shingo
Department of Biology and Chemistry, Kanazawa Institute of Technology, 7-1 Ohgigaoka, Nonoichi, Ishikawa 921-8501, Japan
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