用于多级光折变图像放大的低噪声前置放大器。
Low-noise preamplifier for multistage photorefractive image amplification.
作者信息
Breugnot S, Rajbenbach H, Defour M, Huignard J P
出版信息
Opt Lett. 1995 Jul 15;20(14):1568-70. doi: 10.1364/ol.20.001568.
PMID:19862085
Abstract
We present a two-beam coupling configuration in photorefractive BaTiO(3) that provides a low-noise amplification of the signal to be detected. A two-wave mixing gain of 100 is reached, in conjunction with very low beam fanning background in the signal direction. The extensions of this configuration to photorefractive heterodyne detection and to multistage image amplif ication are theoretically and experimentally studied.
摘要
我们展示了一种用于光折变BaTiO₃的双光束耦合配置，它能对要检测的信号进行低噪声放大。实现了100的双波混频增益，同时在信号方向上具有非常低的光束扇动背景。从理论和实验上研究了这种配置在光折变外差检测和多级图像放大方面的扩展。
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