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Piezoelectric effect induced by an optical excitation of impurities in polar crystals

✍ Scribed by O.S. Torosyan; R.B. Kostanyan

Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
83 KB
Volume
260
Category
Article
ISSN
0375-9601

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✦ Synopsis

It is shown that the optical excitation of impurities produces a homogeneous deformation of crystal lattice which induces a macroscopic polarization in polar crystals due to the direct piezoelectric effect. The deformation tensor and corresponding macroscopic polarization of some polar crystals upon the optical excitation of impurities are calculated.

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## Abstract It is shown that for special directions in piezoelectric cubic crystals Stokes and anti‐Stokes waves couple anharmonically also with longitudinal phonons. The dispersion functions of the coupled waves can be represented by simple analytic expressions, if the coupling with the anti‐Stoke