The application of the photoacoustic transmittance oscillations for determining elastic constants in gallium and indium selenides
作者:
Ch. Ferrer,
A. Segura,
M. V. Andre´s,
V. Mun˜oz,
J. Pellicer,
期刊:
Journal of Applied Physics
(AIP Available online 1996)
卷期:
Volume 79,
issue 6
页码: 3200-3204
ISSN:0021-8979
年代: 1996
DOI:10.1063/1.361219
出版商: AIP
数据来源: AIP
摘要:
Transmittance periodic oscillations are observed in GaSe and InSe on excitation with optical pulses. Such oscillations are explained in terms of photoacoustic generation of dilatational waves, which become resonant within the crystal. Spectral analysis of those oscillations in samples of different thickness has led to an accurate determination of the longitudinal acoustic‐wave velocity along the crystallographic axisc. ©1996 American Institute of Physics.
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