Abstract

The state of polarization is an important feature of any laser emission. The polarization of light is important for the processing of laser beams in polarization-dependent devices such as interferometers, optical amplifiers, optical modulators, etc. In this paper, the polarization of lasing generated from the three-layered cholesteric liquid crystal–dye-doped polymer layer–cholesteric liquid crystal system was investigated experimentally. It was shown that the polarization state of lasing peaks generated from the above-mentioned three-layered system is circular. The polarization of lasing from the dye-doped cholesteric liquid crystalline system is verified experimentally which is also circular. It was shown that the polarization of the lasing from the cholesteric liquid crystal with isotropic defect layer inside coincides with the polarization of lasing from the dye-doped cholesteric liquid crystalline system. For both cases, laser emission has left-hand circular polarization.

中文翻译：

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胆甾型液晶-染料掺杂聚合物层-胆甾型液晶系统产生的激光偏振

摘要

偏振态是任何激光发射的重要特征。光的偏振对于干涉仪、光放大器、光调制器等偏振相关设备中激光束的处理很重要。在本文中，由三层胆甾型液晶-染料掺杂产生的激光偏振聚合物层-胆甾型液晶系统进行了实验研究。结果表明，由上述三层系统产生的激光峰的偏振态是圆形的。来自染料掺杂的胆甾型液晶系统的激光的偏振通过实验验证也是圆形的。结果表明，内部具有各向同性缺陷层的胆甾型液晶的激光偏振与染料掺杂的胆甾型液晶系统的激光偏振一致。对于这两种情况，激光发射都具有左旋圆偏振。