Off-axis scanning three-grating monochromator

doi:10.3788/IRLA201847.0220002

CIOMP OpenIR

	Off-axis scanning three-grating monochromator
	Chen, Jianjun; Cui, Jicheng; Liu, Jia'nan; Yang, Jin; Sun, Ci
	2018
发表期刊	Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering
ISSN	10072276
卷号	47 期号:2
摘要	In order to obtain wide-band and high-resolution monochromatic light, the wavelength of the imaging spectrometer was calibrated, and a scanning monochromator was designed. The grating scanning system was driven by worm and worm wheel mechanism, and an off-axis installation method was designed to install the worm gear, thus solving the problem of the traditional installation method, such as the decrease of the effective aperture of the grating, and the increase of the stray light. The monochromator optics system used the horizontal Czerny-Turner structure. It used three gratings to achieve 280-2240 nm wide band output, which achieved the high diffraction efficiency and guaranteed the spectral resolution in the whole wavelength range. The output wavelength and the motor step number was non-linear in the process of worm gear scanning, so the monochromator system was calibrated by different mathematical models. The final experiment and the measurement proved that the spectral resolution of the monochromator was better than 0.1, 0.2, 0.4 nm at 280-560 nm, 560-1120 nm, 1120-2240 nm respectively. Simultaneously the wavelength repeatability reached to 0.094, 0.186, 0.372 nm, and the precision reached to 0.096, 0.191, 0.382 nm. The monochromator achieves the design goals, and meets the requirements of the wavelength calibration of the imaging spectrometer. 2018, Editorial Board of Journal of Infrared and Laser Engineering. All right reserved.
关键词	Monochromators Calibration Diffraction gratings Optical design Scanning Spectral resolution Spectrometers Stray light Wheels Worm gears
DOI	10.3788/IRLA201847.0220002
收录类别	EI
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/60743
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	Chen, Jianjun,Cui, Jicheng,Liu, Jia'nan,et al. Off-axis scanning three-grating monochromator[J]. Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering,2018,47(2).
APA	Chen, Jianjun,Cui, Jicheng,Liu, Jia'nan,Yang, Jin,&Sun, Ci.(2018).Off-axis scanning three-grating monochromator.Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering,47(2).
MLA	Chen, Jianjun,et al."Off-axis scanning three-grating monochromator".Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering 47.2(2018).

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