The nonlinear refractive index dependence on the incident light polarization state has been studied for pure chloroform and chloroform solutions of aminobenziliden-1,3-indandione derivatives. Measurements were done with linearly, elliptically, and circularly polarized light using 8 ns and 30 ps pulse duration 1064 nm lasers. This allows us to separate the electronic response, molecular reorientation, and thermo-optical components of the nonlinear refractive index. The refractive index variations with the change of laser pulse repetition rate were employed to identify the presence of the thermo-optical effect. Quantum chemical calculations of linear polarizability were used to estimate the magnitude of molecular-reorientation-induced refractive index changes for solvents and solutions. Overall, in this paper we have outlined various essential aspects that need to be taken into account to correctly interpret Z-scan measurement results for organic solvents and solutions.

中文翻译：

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克尔效应的起源：通过偏振相关的Z扫描研究溶液

已经研究了氨基苯甲腈-1,3-茚满二酮衍生物的纯氯仿和氯仿溶液的非线性折射率对入射光偏振态的依赖性。使用8 ns和30 ps脉冲持续时间1064 nm激光，通过线性，椭圆形和圆偏振光进行测量。这使我们能够分离非线性折射率的电子响应，分子重新定向和热光学组件。折射率随激光脉冲重复频率的变化而变化，以识别热光效应的存在。线性极化率的量子化学计算用于估算溶剂和溶液的分子取向诱导的折射率变化的幅度。总体，