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Laser‐induced acoustic phonon gratings in semiconductor thin films

 

作者: J. Wang,   D. C. Hutchings,   A. Miller,   E. W. Van Stryland,   K. R. Welford,   I. T. Muirhead,   K. L. Lewis,  

 

期刊: Journal of Applied Physics  （AIP Available online 1993）
卷期: Volume 73, issue 10  

页码: 4746-4751

 

ISSN:0021-8979

 

年代: 1993

 

DOI:10.1063/1.353838

 

出版商: AIP

 

数据来源: AIP

 

摘要:

Laser induced ultrasonic standing waves are observed in molecular beam deposited ZnSe thin films using the transient grating technique. This observation is attributed to a very short trapping time for single photon absorption in the band tail. The period of the standing wave is used to determine the acoustic phonon velocity in the ZnSe thin film which indicates that it is longitudinal acoustic phonons which are excited.

 

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