交叉型消像散Czerny-Turner结构光谱仪设计

安岩; 孙强; 刘英; 李淳

doi:10.3788/CO.20120505.0470

交叉型消像散Czerny-Turner结构光谱仪设计

doi: 10.3788/CO.20120505.0470

安岩^1,2,
孙强^1, ,,
刘英¹,
李淳¹

1.
中国科学院长春光学精密机械与物理研究所, 吉林长春 130033;
2.
中国科学院研究生院, 北京 130049

基金项目:

国家自然科学基金资助项目(No.60977001);吉林省与中国科学院合作长吉图开发开放先导区科技创新合作专项基金资助项目(No.2011CJT0004);吉林省科技厅资助项目(No.20106015;No.20100310);长春市科技局支撑计划资助项目(No.10023UN100)

详细信息

通讯作者:
孙强

中图分类号: TH744.1;TH703
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出版历程
- 收稿日期: 2012-06-21
- 修回日期: 2012-08-23
- 刊出日期: 2012-10-10

Design of astigmatism-free crossed Czerny-Turner spectrometer

AN Yan^1,2,
SUN Qiang^{1
, ,},
LIU Ying¹,
LI Chun¹

1.
Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China;
2.
Graduate University of Chinese Academy of Sciences, Beijing 130049, China

摘要

摘要: 以相对孔径为1:8,工作波段为780~1 014 nm为初始光学参数,首次推导出交叉型Czerny-Turner(C-T)结构光谱仪的一阶消像散条件,搭建了交叉型消像散C-T结构和交叉型消彗差C-T结构。利用ZEMAX软件对两种初始结构进行了优化和比较。结果表明:交叉型消像散C-T结构具有更优越的光学性能,其均方根半径仅是消彗差C-T结构的12%~52%。消像散C-T结构不仅在沿狭缝方向上能量更为集中,利于设计大聚光能力的分光系统,而且在沿垂直于狭缝方向上点斑更小,具有更高的光谱分辨率。
- 光学设计 /
- 切尔尼-特纳(C-T)结构 /
- 交叉型光谱仪 /
- 消像散结构 /
- 消彗差结构
Abstract: The first-order astigmatism-free conditions in a crossed Czerny-Turner (C-T) structure spectrometer are derived in this paper and the optical parameters determined for a relative aperture of 1: 8 and a working range of 780 nm to 1 014 nm. An astigmatism-free crossed C-T spectrometer is built up with ZEMAX software, and a corresponding coma-free crossed C-T spectrometer is also built up for the comparison. The initial structures for the two types of crossed C-T optical systems are then optimized, and the performance merits are compared. It is shown that the astigmatism-free crossed C-T structure has superior optical performance with an RMS for the spot diagram only 12% to 52%, compared with that of the corresponding coma-free C-T structure over the working range. This indicates that the astigmatism-free crossed C-T structure possesses not only a better energy concentration along the slit direction, which is beneficial to spectrometers requiring larger condenser capacity, but also a smaller spot diameter along the direction perpendicular to the slit indicating that a higher spectrum resolution is achievable.
- optical design /
- Czerny-Turner structure /
- crossed spectrometer /
- coma-free structure /
- astigmatism-free structure

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参考文献(1)

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