改善石英晶体旋光滤波器次极大的优化设计

为了改善滤波光谱的次极大,提高透过滤波片观察像的衬度,设计了减小次极大光强的石英晶体旋光滤波结构,并从理论上分析了滤波特性。以3级石英晶体旋光滤波器为例,由分析可知,在第3级之后增加1级与第1级或第2级相同的结构,均有效地减小了次极大的光强;比较发现,增加1级第2级的结构效果较好。结果表明,此设计对改善石英晶旋光滤波器次极大应用于观测光谱中提供了理论依据。

Great design optimization of suppressing sideband energy based on the optical rotatory dispersion effect

Abstract:Based on the third-level optical rotatory effect,the principle of filter characteristic was analyzed by using Mueller matrix and Stokes parameter .The filter structure of suppressing sideband energy was designed and analyzed by theory. The result indicated that after the third level adding a structure with the same as the structure of the first level or the second level can suppress sideband energy effectively . Through comparison,we can see that,adding the structure with the same as the structure of the second level is much better.