Energy relations for space-charge waves in photorefractive materials

被引：2
|
作者：
Kalinin, VA
Solymar, L
机构：
[1] Department of Engineering Science, University of Oxford, Oxford OX1 3PJ, Parks Road
来源：
APPLIED PHYSICS LETTERS | 1996年 / 68卷 / 26期
关键词：
D O I：
10.1063/1.116630
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
An energy balance equation is derived with the aid of a partial differential equation describing the space-charge field in photorefractive materials. Expressions are found for power flux, losses, and the power absorbed from an external source both for the low- and high-frequency branches of space-charge waves. The efficiency of energy conversion from the external source into the space-charge wave is calculated and compared for two different mechanisms of optical excitation: (i) by a moving interference pattern and (ii) by a combination of a stationary interference pattern and an external ac field. (C) 1996 American Institute of Physics.
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页码：3826 / 3828
页数：3
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