采用柱面镜的无像散 Czerny-Turner 紧凑型光谱仪。

Astigmatism-free Czerny-Turner compact spectrometer with cylindrical mirrors.

作者信息

Xia Guo, Wu Su, Wang Guodong, Hu Mingyong, Xing Jinyu

出版信息

Appl Opt. 2017 Nov 10;56(32):9069-9073. doi: 10.1364/AO.56.009069.

DOI:10.1364/AO.56.009069

Abstract

A modified optical design for a broadband, high resolution, astigmatism-free Czerny-Turner spectrometer is proposed. Astigmatism is corrected by using cylindrical mirrors over a broad spectral range. The theory and method for astigmatism correction are thoroughly analyzed. The comparison between the modified Czerny-Turner spectrometer and the traditional Czerny-Turner spectrometer is also described in detail. The ray-tracing results show that the RMS spot radius has decreased to 4.2 μm at the central wavelength and 17 μm at the wedge wavelength.

摘要

提出了一种用于宽带、高分辨率、无像散的切尔尼-特纳光谱仪的改进光学设计。通过在宽光谱范围内使用柱面镜来校正像散。深入分析了像散校正的理论和方法。还详细描述了改进后的切尔尼-特纳光谱仪与传统切尔尼-特纳光谱仪之间的比较。光线追迹结果表明，在中心波长处均方根光斑半径已降至4.2μm，在楔形波长处降至17μm。