PARAMETRIC OSCILLATION IN PHOTOREFRACTIVE MEDIA

被引：21

作者：

PEDERSEN, HC

JOHANSEN, PM

机构：

[1] Optics and Fluid Dynamics Department, Risø National Laboratory, Roskilde

来源：

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS | 1995年 / 12卷 / 06期

关键词：

D O I：

10.1364/JOSAB.12.001065

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present an analysis of what is called parametric oscillation in photorefractive media. It is shown theoretically that when a running grating and a constant electric field are applied to a photorefractive medium it is possible for two secondary gratings to grow spontaneously. These theoretical predictions are subsequently verified experimentally in the crystal Bi12SiO20, and excellent qualitative agreement-is obtained. In previous subharmonic experiments, only grating vectors K/2, K/3, and K/4 were observed. Now, however, a whole continuum of grating vectors has been observed. Thus subharmonic generation in photorefractive materials is simply a special case of parametric oscillation in which the two secondary gratings are identical.

引用

页码：1065 / 1073

页数：9

共 27 条

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