Wollaston 棱镜阵列中子棱镜结构角误差分析 - 中北大学.PDFVIP

32 1 Vol.32 No. 1 2011 1 Journal of Applied Optics Jan. 2011 : 1002-2082(2011) 01-0080-05 Wollaston 张跃国, 张记龙, 王志斌, 田二明, 李　晓, 王相如 ( , 030051) 摘　要: Wollaston 棱镜阵列中各 个子棱镜的结构角间的 差影响着光谱仪的性能。从干涉图的 无缝拼接入手, 推导了n 元Wollaston 棱镜阵列的最大光程差公式, 以三元Wollaston 棱镜阵列为 例, 分析子棱镜结构角 差对光谱分辨率的影响, 通过干涉条纹光强公式构建干涉图样模型, 利 用Matlab 软件编写相关程序, 仿真了630 nm 单色光的复原光谱, 分析结构角 差对光谱的影响。 - 3 实验结果表明: 当子棱镜结构角 差大于10 数量级时, 光谱中将有伪峰出现, 为Wollaston 棱 镜阵列的研制提供了理论依据。 关键词: 傅里叶变换光谱仪; Wollaston 棱镜阵列; 空间调制; 干涉图拼接 : O433. 1: A Tol erance analysis of wedge angle in Wollaston pri sm array - , - , - , ZHANG ue guo ZHANG Ji long WANG Zhi bin TIAN Er-ming, LI Xiao, WANG Xiang-ru (Shanxi Photoelectric Information and Equipment Engineering Research Center, North University of China, Taiyuan 030051, China) Abstract: T he performance of polarization interference Fourier transform spectrometer is dependent on the angle error of each prism in Wollaston prism array ( WPA) . Based on the seamless stitching of interferograms, the maximum optical path difference of 1n WPA was deduced Taking a. 13 WPA as example the impact of the angle error of each prism on, spectral resolution was analyzed. T he interferogram model was constructed based on fringe pattern intensity formula. The spectrum of 630nm monochromatic light was simulated with MATLAB program and the impact of angle error on spectrum was analyzed A false spectral. - 3 peak occurred when the angle error was larger than the magnitude of 10 . Key words: Fourier transform spectrometer;