Acousto-Optic Investigation of Acoustic Waves Propagation in Anisotropic Medium

被引：3

作者：

Polikarpova, Nataliya V. ^{[1
]}

Djakonov, Evgeny A. ^{[1
]}

Voloshinov, Vitaly B. ^{[1
]}

机构：

[1] Moscow MV Lomonosov State Univ, Dept Phys, Moscow 119991, Russia

来源：

INTERNATIONAL CONGRESS ON ULTRASONICS (GDANSK 2011) | 2012年 / 1433卷

关键词：

Acoustic waves; paratellurite; acousto-optic; acoustic reflection; phase and group velocity; PLANE ELASTIC-WAVES; TEO2; SINGLE-CRYSTAL; PARATELLURITE CRYSTAL; BACKWARD REFLECTION;

D O I：

10.1063/1.3703150

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The paper presents new results on analysis of propagation and reflection of acoustic waves in the single crystal tellurium dioxide. The investigation was carried out by means of the acousto-optic methods. We observed in a cell with a specially chosen configuration, a simultaneous generation of two elastic modes provided by a single piezoelectric transducer. Maximum transformation of elastic energy into a quasi shear elastic wave with the efficiency about 100% was obtained during a reflection of a quasi longitudinal wave from a free surface. The reflected quasi shear wave was characterized by an extremely large acoustic walkoff angle. A close to back reflection of elastic waves was also observed in the crystal. This reflection was accompanied by a compression of the reflected beam to a factor of 8. Acousto-optic figure of merit of paralellurite was calculated along various directions in the crystal for different polarizations of the optic and acoustic waves. Good agreement was obtained between the experimental and the theoretical data.

引用

页码：110 / 113

页数：4

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