多级石英晶体旋光光学滤波器的滤波特性

根据石英晶体的旋光色散特性，利用光学矩阵方法对多级石英晶体旋光光学滤波器的滤波原理进行了详细的理论分析，推导出多级石英晶体旋光光学滤波器的透射主峰波长和通带半宽度的计算公式.利用分光光度计对单级和多级石英晶体旋光光学滤波器的滤波特性进行了实验研究，结果表明单级和多级石英晶体旋光光学滤波器滤波特性与理论曲线一致.从理论和实验上证明了多级石英晶体旋光光学滤波器与单级相比通带半宽度得到了有效的压缩，且随滤波器级数的增大，压缩的程度也随之增大. 关键词： 光学滤波器 偏振 石英晶体 旋光色散

Characteristics of multistage quartz optical filter based on the optical rotatory dispersion effect

Based on optical rotatory dispersion effect, the principle of the multistage quartz crystal filter was theoretically analyzed by using Muller matrix and Stokes parameter. The wavelength of the main peak and full width at half maximum (FWHM) of peaks of the multistage optical filter were deduced. The characteristics of the single and multistage quartz crystal optical filters were systematically investigated by the spectrometer, and the experimental results verified the theoretical analysis. The results proved that, compared with the single quartz crystal optical filter, the FWHM can be effectively compressed by multistage quartz crystal optical filter, and the compression ability increases with the increase of the stage number.