富勒烯衍生物中的自散焦、自聚焦及其相互转化  

SELF FOCUSING-SELF DEFOCUSING TRANSFORMATION IN AN ORGANOMETALIC FULLERENE-C_(60) DERIVATIVE

作　　者：方光宇[1] 宋瑛林[1] 王玉晓[1] 张学如[1] 曲士良[1] 李淳飞[1] 宋礼成[2] 胡青眉[2] 刘鹏程 

机构地区：[1]哈尔滨工业大学应用物理系,哈尔滨150001 [2]南开大学化学系,天津300071

出　　处：《物理学报》2000年第8期1499-1502,共4页Acta Physica Sinica

摘　　要：用Z扫描方法研究了富勒烯有机铬衍生物fac andmer [bis (1,2 diphenylphosphino)ethane](tricarbonyl)(η2 fullerene C60 )chromium的非线性折射特性 ;用速率方程理论分析了激发态光学非线性材料非线性折射行为 ,以及大光强下高阶激发态折射度如何引起材料自散焦 自聚焦相互转化 .计算出了转变光强 .并数值模拟了不同光强下Z扫描实验曲线的变化过程 .We studied the nonlinear refraction properties of an organometallic fullerene\|C\-\{60\} derivative fac\| and mer\| \[bis(1,2\|diphenylphosphino) ethane\] (tricarbonyl)( η 2\|fullerene\|C\-\{60\}) chromium by using Z scan method.We also investigated the nonlinear refraction behavior of exited\|state nonlinear optical materials and the switching between self\|defocusing and self\|focusing caused by the refrangibility of high excited state based on rate\|equation theory.The transformation intensity was worked out,and the experiment was simulated numerically.The theoretical results agrees well with the experimental data.

关 键 词：自散焦 自聚焦 富勒烯衍生物 

分 类 号：O482.3[理学—固体物理]