光折变晶体中双光束耦合时间响应特性的研究  

Study of the Response Time of Two-beam Coupling in Photorefractive Crystals

作　　者：周忠祥 孙万钧 孙秀冬 许克彬 姜全忠[1] 陈焕矗[1] 

机构地区：[1]哈尔滨工业大学应用物理系,山东大学晶体材料研究所

出　　处：《中国激光》1996年第2期187-192,共6页Chinese Journal of Lasers

基　　金：山东大学晶体研究所开放实验室基金

摘　　要：从描述双光束耦合规律的动态方程组出发．在考虑了光栅调制度变化后，给出了包含晶体固有参数、入射总光强、入射夹角、光强比等变量在内的写入响应时间解析表达式，实验结果与理论分析定性符合很好。Considering the change of the grating modulation index, a united analytic formula of the response time for two-beam coupling is obtained by solving the dynamic equation of two-beam coupling. It involves paratmeters of crystals, incident intensity, full incident angle and signal-pump ratio. The experimental resultS using Ce:KNSBN crystal are in good agreement with the theory qualitatively.

关 键 词：光折变晶体 双光束耦合 响应时间 光学 

分 类 号：O734.1[理学—晶体学] TN241[电子电信—物理电子学]