Terahertz Ultrasonic Generation and Detection in GaAs/AlGaAs Quantum Wells
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概要
- 論文の詳細を見る
High frequency ultrasonic pulse generation and detection are investigated in a sample with three embedded GaAs/Al0.3Ga0.7As quantum wells by means of ultrashort optical pulses. The experimental results, showing that ultrasonic frequencies up to 0.5 THz are detected, are compared with numerical simulations of the ultrasonic pulse generation, propagation and attenuation, and of the optical detection process. The effective optical extinction coefficients of the embedded quantum wells and the ultrasonic attenuation coefficient of Al0.3Ga0.7As are determined from the analysis.
- 2005-06-15
著者
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Fukui Takashi
Research Center For Integrated Quantum Electronics (rciqe) And Graduate School Of Information Scienc
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TACHIZAKI Takehiro
Department of Applied Physics, Graduate School of Engineering, Hokkaido University
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BAUMBERG Jeremy
School of Physics and Astronomy, University of Southampton
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Wright Oliver
Department Of Applied Physics Faculty Of Engineering Hokkaido University
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Matsuda Osamu
Department Of Applied Physics Faculty Of Engineering Hokkaido University
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Wright Oliver
Department of Applied Physics, Graduate School of Engineering, Hokkaido University, Sapporo 060-8628, Japan
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Matsuda Osamu
Department of Applied Physics, Graduate School of Engineering, Hokkaido University, Sapporo 060-8628, Japan
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Tachizaki Takehiro
Department of Applied Physics, Graduate School of Engineering, Hokkaido University, Sapporo 060-8628, Japan
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