Experimental Identification and Study of Coloured Conical Emission in Quadratic Nonlinear Media  

作　　者：杨华 钱列加 傅喜泉 罗航 袁鹏 朱鹤元 

机构地区：[1]State Key Laboratory for Advanced Photonic Materials and Devices, Advanced Materials Laboratory, Department of Optical Science and Engineering, Fudan University, Shanghai 200433

出　　处：《Chinese Physics Letters》2007年第7期1945-1948,共4页中国物理快报（英文版）

基　　金：Supported the National Natural Science Foundation of China under Grant Nos 60538010 and 10576009, and the Science and Technology Commission of Shanghai under Grant Nos 05JC14005 and 05SG02.

摘　　要：We have explicitly identified coloured conical emission （CCE） and noncollinear optical parametric generation （OPC） by spectrum characterizations. With an experimental setup providing different pump pulse durations, CCE and noncollinear OPG are observed both alternatively and simultaneously. Comparisons between CCE and noncollinear OPC are studied. Accumulation behaviour of modulational instabilities is observed in our two-crystal cascaded configuration, which results in enhancement or depression of the CCE formation.We have explicitly identified coloured conical emission （CCE） and noncollinear optical parametric generation （OPC） by spectrum characterizations. With an experimental setup providing different pump pulse durations, CCE and noncollinear OPG are observed both alternatively and simultaneously. Comparisons between CCE and noncollinear OPC are studied. Accumulation behaviour of modulational instabilities is observed in our two-crystal cascaded configuration, which results in enhancement or depression of the CCE formation.

关 键 词：OPTICAL PARAMETRIC-AMPLIFIER INSTABILITY AMPLIFICATION GENERATION CRYSTAL 

分 类 号：O43[机械工程—光学工程]