中国光学（中英文）2023，Vol.16Issue(6)：1442-1449,8.DOI:10.37188/CO.2023-0004
狭缝高度对单色仪光谱分辨率的影响
Effect of slit height on the spectral resolution of a monochromator
摘要
Abstract
Monochromators are widely used in spectral calibration,material analysis and other aspects,so re-search of high spectral resolution monochromator systems is of great significance.Based on the vector grat-ing equation,the influence of the height of the incident slit on the spectral line bending of a spectrometer is investigated,and the analytical expressions of the spectral line bending at the same wavelength and the slit height are given.An optimization scheme of the spectral resolution of the monochromator based on the sup-pression of spectral line bending by the slit height is proposed.According to the performance index require-ments of a highly sensitive and ultra-fast time response detector,a three-grating monochromator optical sys-tem with a spectral resolution of 0.1 nm and a band range of 185-900 nm was designed,and a prototype was built to verify the influence of the slit height on spectral line bending,and to explore the influence of slit height on spectral resolution on the above basis.The experimental results show that the spectral resolution can be improved from 0.32 nm to 0.1 nm by optimizing the slit height when the slit width is fixed.关键词
单色仪/谱线弯曲/狭缝高度/光谱分辨率Key words
monochromator/spectral line bending/slit height/spectral resolution分类
信息技术与安全科学引用本文复制引用
张靖,张博,刘凯,王楷炀,冯树龙,李文昊,姚雪峰..狭缝高度对单色仪光谱分辨率的影响[J].中国光学（中英文）,2023,16(6):1442-1449,8.基金项目
吉林省科技发展计划(No.20210203053SF)Supported by Jilin Provincial Science and Technology Development Plan(No.202103053SF) （No.20210203053SF）
