中间段光折变晶体材料参数的测量原理  

Measuring principle of materials parameters of photorefractive crystal in intermediate regime

作　　者：吉选芒[1] 王金来[1] 刘劲松[2] 安毓英 

机构地区：[1]山西运城高等专科学校物理系 [2]西安电子科技大学技术物理系

出　　处：《激光技术》1999年第3期165-167,共3页Laser Technology

基　　金：国防科技预研基金

摘　　要：提出了中间段光折变晶体材料参数的测量原理。利用公开报道的关于Ｃｅ∶ＫＮＳＢＮ双光束耦合的实验数据计算了该晶体的材料参数。实验与理论结果相吻合。The two wave coupling is a fundamental and important photorefractive effect.Till now,many papers have studied the saturation effect of the gain coefficient of the photorefractive crystal.The studies found that the gain coefficient G varies with the increasing of the light intensity I ,and goes through three stages:cut off,increasing and saturation regime.This paper formulated a set of experessions of materials parameters and presents the measuring principles of materials parameters of photorefractive crystal in intermediate regime,namely increasing regime.The experimental results are in accord with the theoretical analysis.

关 键 词：光折变效应 材料参数 双光束耦合 晶体 

分 类 号：TN204[电子电信—物理电子学]