Acta Photonica Sinica, Volume. 44, Issue 4, 430002(2015)

Design of a Moving Mirror Scanning System in Fourier Transform Infrared Spectrometer

SHI Lei1,*... LIU Jia2, GAO Wu1, ZHANG Qian-xuan1 and WANG Wei1 |Show fewer author(s)
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  • 2[in Chinese]
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    Inorder to improve the performance of Fourier Transform Infrared Spectrometer, the optical structure was based on the combination of cube corner mirror and fixed plane mirror, a swing mechanism moving mirror scanning system was designed. The system transfer function was established and the characteristics of control model was analysised, a feedback algorithm was designed to fit the system. It indicates that the system was friction free and insensitive to vibration; the optical structure can compensate the tilt and shift caused by the swing of the moving mirror, ensure the repeatabilty and stability of instrument; the algorithm parameters was adjusted to improve scanning accuracy, and the precision is better than 98.4%. The SNR of spectral is better than 80000: 1 by using the system, under 4 cm-1,which can meet the requirements of high precision quantitative analysis.

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    SHI Lei, LIU Jia, GAO Wu, ZHANG Qian-xuan, WANG Wei. Design of a Moving Mirror Scanning System in Fourier Transform Infrared Spectrometer[J]. Acta Photonica Sinica, 2015, 44(4): 430002

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    Paper Information

    Received: Sep. 28, 2014

    Accepted: --

    Published Online: Apr. 28, 2015

    The Author Email: Lei SHI (998sl@sina.com)

    DOI:10.3788/gzxb20154404.0430002

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