Characteristics of photothermal effects in guest–host liquid crystals by heat-conduction analysis
Characteristics of photothermal effects in guest–host liquid crystals by heat-conduction analysis
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客主液晶光热效应的热传导分析特征
DOI：
10.1364/josab.16.002195
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发表时间：
1999
期刊：
影响因子：
--
通讯作者：
Y. Harato
中科院分区：
文献类型：
--
作者：
H. Ono;Y. Harato
利用热传导分析方法，研究了主客体液晶（GHLC）中由光热效应引起的自相位调制的光学非线性。用两种不同的方法测定了GHLC中光热光学非线性引起的折射率分布。一种方法（方法1）是包含高阶非线性相位分布的基尔霍夫衍射积分的解析解。另一种方法（方法2）是从热传导方程的解析解开始。从方法1确定的折射率分布是在良好的协议与那些从方法2，并在GHLC的光热效应引起的高阶光学非线性的物理起源进行了讨论。
Optical nonlinearity originating in photothermal effects in guest-host liquid crystals (GHLC’s), which caused self-phase modulation in the GHLC’s, was characterized by use of heat-conduction analysis. The refractive-index distributions that are due to the photothermal optical nonlinearity in the GHLC’s were determined by two different methods. One method (approach 1) is analytical solution of Kirchhoff’s diffraction integral including the higher-order nonlinear phase distribution. Another method (approach 2) is to start by analytical solution of a heat-conducting equation. The refractive-index distributions determined from approach 1 were in good agreement with those from approach 2, and the physical origin of the higher-order optical nonlinearity caused by the photothermal effects in the GHLC’s is discussed.