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Terahertz ultrasonic generation and detection in GaAs/AlGaAs quantum wells

Terahertz ultrasonic generation and detection in GaAs/AlGaAs quantum wells
Terahertz ultrasonic generation and detection in GaAs/AlGaAs quantum wells
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.
laser acoustics, picosecond acoustics, GaAs, AlGaAs, quantum well, optical interferometer, light scattering
0021-4922
4477-4479
Tachizaki, Takehiro
54b3d9f8-9d31-4185-bed8-20955a3f9d46
Matsuda, Osamu
33a6004b-8262-404c-80db-4d4870f0af0c
Fukui, Takashi
12945932-ea1a-4ce7-906e-e64e06463b59
Baumberg, Jeremy J.
51423b5f-bdb8-4851-8d50-472253ceb12c
Wright, Oliver B.
3f9ed3be-e416-4fb1-bf05-43b87257058d
Tachizaki, Takehiro
54b3d9f8-9d31-4185-bed8-20955a3f9d46
Matsuda, Osamu
33a6004b-8262-404c-80db-4d4870f0af0c
Fukui, Takashi
12945932-ea1a-4ce7-906e-e64e06463b59
Baumberg, Jeremy J.
51423b5f-bdb8-4851-8d50-472253ceb12c
Wright, Oliver B.
3f9ed3be-e416-4fb1-bf05-43b87257058d

Tachizaki, Takehiro, Matsuda, Osamu, Fukui, Takashi, Baumberg, Jeremy J. and Wright, Oliver B. (2005) Terahertz ultrasonic generation and detection in GaAs/AlGaAs quantum wells. Japanese Journal of Applied Physics, 44 (6B), 4477-4479. (doi:10.1143/jjap.44.4477).

Record type: Article

Abstract

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.

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More information

Submitted date: 12 November 2004
Published date: 24 June 2005
Keywords: laser acoustics, picosecond acoustics, GaAs, AlGaAs, quantum well, optical interferometer, light scattering
Organisations: Physics & Astronomy

Identifiers

Local EPrints ID: 16492
URI: http://eprints.soton.ac.uk/id/eprint/16492
ISSN: 0021-4922
PURE UUID: 9b0d951b-9e5c-453e-bc67-4b0678e2e5d0

Catalogue record

Date deposited: 09 Aug 2005
Last modified: 22 Apr 2020 16:33

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