Acousto-optic interaction of a Gaussian laser beam with an ultrasonic wave of cylindrical symmetry

被引：13

作者：

Grulkowski, Ireneusz ^{[1
]}

Jankowski, Dawid ^{[1
]}

Kwiek, Piotr ^{[1
]}

机构：

[1] Univ Gdansk, Inst Expt Phys, PL-80952 Gdansk, Poland

来源：

APPLIED OPTICS | 2007年 / 46卷 / 23期

关键词：

D O I：

10.1364/AO.46.005870

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present experimental studies of the interaction between a narrow Gaussian laser beam and a standing cylindrical ultrasonic wave. As a theoretical approach, a Fourier-optics-based successive diffraction model is used. Depending on the ratio of the Gaussian laser beam diameter to the first nodal diameter of the cylindrical ultrasound, light refraction or diffraction is observed. We experimentally investigate the time-averaged light intensity as well as the modulation of light in the far field of light refraction-diffraction by a cylindrical ultrasound. It is revealed that significant focusing appears if the phase front of the incident light is curved. The focusing effects of the acousto-optic system depend on the width of the laser beam and curvature of the phase front. Finally, possible applications are discussed. (c) 2007 Optical Society of America.

引用

页码：5870 / 5876

页数：7

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