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Excitation of shear waves due to the interband absorption of laser radiation in a piezoelectric semiconductor-dielectric layered structure

Excitation of shear waves due to the interband absorption of laser radiation in a piezoelectric... Abstract Optical piezoelectric generation of shear bulk acoustic waves by volume-distributed electric fields in the vicinity of a hard planar interface between a piezoelectric semiconductor and a dielectric is described theoretically. Nonstationary and nonuniform electric fields are formed as a result of the spatial separation of electrons and holes photoexcited in the piezoelectric semiconductor due to the interband absorption of laser radiation. Frequency regions where the efficiency of the optical piezoelectric excitation of shear waves increases when the surface of the piezoelectric semiconductor is loaded by another piezoelectric with a high acoustic impedance are found. Numerical estimates of the applicability of the immobile hole model are presented. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Acoustical Physics Springer Journals

Excitation of shear waves due to the interband absorption of laser radiation in a piezoelectric semiconductor-dielectric layered structure

Makarova, L. N.
Acoustical Physics , Volume 49 (5): 5 – Sep 1, 2003
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References (6)

Publisher
Springer Journals
Copyright
2003 MAIK "Nauka/Interperiodica"
ISSN
1063-7710
eISSN
1562-6865
DOI
10.1134/1.1608980
Publisher site
See Article on Publisher Site

Abstract

Abstract Optical piezoelectric generation of shear bulk acoustic waves by volume-distributed electric fields in the vicinity of a hard planar interface between a piezoelectric semiconductor and a dielectric is described theoretically. Nonstationary and nonuniform electric fields are formed as a result of the spatial separation of electrons and holes photoexcited in the piezoelectric semiconductor due to the interband absorption of laser radiation. Frequency regions where the efficiency of the optical piezoelectric excitation of shear waves increases when the surface of the piezoelectric semiconductor is loaded by another piezoelectric with a high acoustic impedance are found. Numerical estimates of the applicability of the immobile hole model are presented.

Journal

Acoustical Physics – Springer Journals

Published: Sep 1, 2003

Keywords: Acoustics

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