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基于扭曲向列型液晶空间光调制器的旋光特性,根据空间光调制器所加电压和加载相位与旋光角度的对应关系,设计了可以生成多种涡旋矢量光的通用光路.利用该原理和光路系统,在实验上生成了多种携带轴对称相位的矢量光以及图案般复杂的矢量光,观察和检测了它们的偏振特性,获得了较好的实验结果.并且模拟了具有涡旋相位的矢量光的紧聚焦场,分析了它们的紧聚焦特性.由于这种生成矢量光的方法光路装置简单、操作容易,产生矢量光的过程中几乎不损失能量,并且不存在聚焦过程,因此在如强激光矢量光束与物质相互作用、激光加速等方面具有重要的应用潜力.
Based on the optical rotation property of the twisted nematic liquid crystal spatial light modulator, a universal optical path that can generate a variety of vortex vector light is designed according to the corresponding relationship between the voltage applied by the spatial light modulator and the loading phase and the rotation angle. By using this principle and In the light path system, a variety of vectorial light with axisymmetric phase and complex vector light are experimentally generated, their polarization characteristics are observed and tested, and the better experimental results are obtained. The compact focusing field of vector light is analyzed and the compact focusing characteristics of the light are analyzed.Because this method of generating vector light is simple and easy to operate and generates almost no energy loss during the generation of vector light and there is no focusing process, Strong laser beam and substance interaction, laser acceleration and other aspects have important potential applications.