3－甲基－4－甲氧基－4’－硝基二苯乙烯的三阶非线性光学性质  

The Third-Order Optical Nonlinearity of 3-Methyl-4-Methoxy-4'-Nitrostilbene

作　　者：冯金生[1] 刘敬镛[1] 余从煊[1] 杨少辰[1] 龚旗煌[1] 

机构地区：[1]北京理工大学化工与材料学院,北京大学物理系

出　　处：《北京理工大学学报》1996年第2期191-193,共3页Transactions of Beijing Institute of Technology

基　　金：国家"八六三"计划资助

摘　　要：在四氢呋喃溶液中测量了３－甲基－４－甲氧基－４’－硝基二苯乙烯（ＭＭＯＮＳ）的三阶非线性光学效应．发现其在１．０６μｍ处具有较大的非共振二阶非线性光学超极化率，并据此计算了其晶体的三阶非线性光学系数，χ（３）＝２．５２ｎｍ２／Ｖ２，与著名的ＰＩＳ同数量级．非线性光学响应时间小于５０ｐｓ，表明ＭＭＯＮＳ的非线性光学效应是由于分子中π－电子的极化引起的．此结果表明ＭＭＯＮＳ可能成为有价值的非线性光学材料．High nonresonant second-order hyperpolarizability has been measured for a solution of 3-methyl-4-methoxy-4'-nitrostibene (MMONS) in tetrahydrofuran 1.68 x 10--28 nm2/V2 at a wavelength of 1.06 po The corresponding value of third-order susceptibility for the solid-state is calculated to be The nonlinearoptical response the is less than 50 ps. These results show that MMONS may prove to be one among the hot nolinear optical materials in prospect.

关 键 词：甲基 甲氧基硝基 二苯乙烯 非线性光学性质 

分 类 号：O625.12[理学—有机化学]