Coherent acoustic phonons in GaAs/AlAs superlattices

Authors
Bartels, A Dekorsy, T Kurz, H Kohler, K
Citation
A. Bartels et al., Coherent acoustic phonons in GaAs/AlAs superlattices, PHYSICA B, 263, 1999, pp. 45-47
Citations number
7
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICA B
ISSN journal
09214526 → ACNP
Volume
263
Year of publication
1999
Pages
45 - 47
Database
ISI
SICI code
0921-4526(199903)263:<45:CAPIGS>2.0.ZU;2-V
Abstract
Coherent zone-folded acoustic phonons are generated in GaAs/AlAs superlatti ces by excitation with femtosecond laser pulses. Three modes of first and s econd backfolded order are driven by resonant impulsive stimulated Raman sc attering in forward and backward directions. The coherent vibrations are an alyzed in a time resolved detection measurement and compared with Raman sca ttering cross sections. (C) 1999 Elsevier Science B.V. All rights reserved.