Yang Guowei, Zheng Zhenrong, Li Haifeng, Liu Xu
State Key Laboratory of Modern Optical Instrumentation, Zhejiang University, Hangzhou 310027, China.
Appl Opt. 2010 Mar 10;49(8):1280-7. doi: 10.1364/AO.49.001280.
We propose a method to reduce sidelobes of multistage Lyot filters by substituting certain stages with two-plate fan Solc stages. Parallel-aligned nematic liquid crystal (LC) cells are used as variable retarders to compose multistage Lyot LC tunable filters (LCTF). The simulation of a four-stage Lyot LCTF and a tunable filter, comprising two stages of Lyot filter and two stages of two-plate Solc filter, are compared. With this method, the sidelobes are reduced and the full width at half-maximum intensity of transmission peak is also reduced. Experimental results and theoretical analysis are presented in detail to verify this method.
我们提出了一种通过用双板扇形索尔茨基级替代多级利奥滤光器的某些级来降低其旁瓣的方法。平行排列的向列型液晶（LC）盒用作可变延迟器，以构成多级利奥液晶可调滤光器（LCTF）。比较了一个四级利奥LCTF和一个由两级利奥滤光器和两级双板索尔茨基滤光器组成的可调滤光器的模拟结果。通过这种方法，旁瓣降低了，并且透射峰半高宽也减小了。详细给出了实验结果和理论分析以验证该方法。
