LASER-INDUCED ACOUSTIC PHONON GRATINGS IN SEMICONDUCTOR THIN-FILMS

Authors
WANG J HUTCHINGS DC MILLER A VANSTRYLAND EW WELFORD KR MUIRHEAD IT LEWIS KL
Citation
J. Wang et al., LASER-INDUCED ACOUSTIC PHONON GRATINGS IN SEMICONDUCTOR THIN-FILMS, Journal of applied physics, 73(10), 1993, pp. 4746-4751
Citations number
21
Categorie Soggetti
Physics, Applied
Journal title
Journal of applied physics → ACNP
ISSN journal
00218979
Volume
73
Issue
10
Year of publication
1993
Part
1
Pages
4746 - 4751
Database
ISI
SICI code
0021-8979(1993)73:10<4746:LAPGIS>2.0.ZU;2-V
Abstract
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 ph oton absorption in the band tail. The period of the standing wave is u sed to determine the acoustic phonon velocity in the ZnSe thin film wh ich indicates that it is longitudinal acoustic phonons which are excit ed.