光谱学与光谱分析, 2012, 32 (3): 830, 网络出版: 2012-04-16   

平面光栅双单色仪的光学系统设计

Optical System Design of Plane Grating Double Monochromator
作者单位
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, 北京100049
摘要
平面光栅双单色仪是构成光栅衍射效率测试仪的重要组成部分, 为了完成光栅衍射效率测试仪的研制, 需要对平面光栅双单色仪的光学系统进行设计和模拟。 仪器主要由光源、 前置单色仪、 测量单色仪和探测器组成; 结合仪器的实际使用需要, 确定了光源、 探测器和光路结构, 根据仪器的设计要求, 分别对前置单色仪和测量单色仪的光学系统进行设计和模拟, 给出了各自光学系统的像面点列图和实际光线追迹数据。 设计结果保证了仪器光学系统的测量准确性。
Abstract
The plane grating double monochromator is the important part of the instrument for testing diffraction efficiency of plane grating, and in order to accomplish the research of the instrument, the optical system design and simulation of the plane grating double monochromator was investigated. The instrument mainly consists of light source, front monochromator, testing monochromator and detector, and combined with the practical requirement, the corresponding light source, detector and the structure of the optical path were selected. According to the design requirement, the design and simulation of the optical system of the front monochromator and testing monochromator were done respectively, and the spot diagram of the image surface and the results of real ray trace were given. The analysis showed that in the front monochromator the maximum width of the exit spot and the maximum height of the exit spot were 0.33 and 1.83 mm respectively. On the other hand, in the testing monochromator, the maximum width of the exit spot and the maximum height of the exit spot were 0.66 and 7.27 mm, respectively. Through selecting the size of the exit slit properly, the system can work without luminous flux lost, which guarantees the testing precision of the optical system of the instrument.

寇婕婷, 巴音贺希格, 唐玉国, 齐向东, 于宏柱. 平面光栅双单色仪的光学系统设计[J]. 光谱学与光谱分析, 2012, 32(3): 830. KOU Jie-ting, Bayanheshig, TANG Yu-guo, QI Xiang-dong, YU Hong-zhu. Optical System Design of Plane Grating Double Monochromator[J]. Spectroscopy and Spectral Analysis, 2012, 32(3): 830.

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