Acoustic phonon generation and detection in GaAs/Al_{0.3}Ga_{0.7}As quantum wells with picosecond laser pulses
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概要
- 論文の詳細を見る
Picosecond acoustic-phonon pulse generation and detection is investigated in a sample containing three GaAs/Al0.3Ga0.7As quantum wells of different thickness with an interferometric optical pump and probe technique. The pump photon energy is tuned through the hh1-e1 transitions of each well and the probe photon energy is chosen to allow the detection of the phonon pulses at the sample surface. The phonon pulse shapes are explained with a model that relates the carrier wave functions to the acoustic strain, and the acoustic strain to the detected optical reflectance and phase changes.
- American Physical Societyの論文
著者
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Baumberg J.
Nanophotonics Centre Department Of Physics University Of Cambridge
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Wright O.
Division Of Applied Physics Graduate School Of Engineering Hokkaido University
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MATSUDA O.
Division of Applied Physics, Graduate School of Engineering, Hokkaido University
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Matsuda O
Division Of Applied Physics Graduate School Of Engineering Hokkaido University
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