Acta Photonica Sinica, Volume. 44, Issue 4, 430002(2015)
Design of a Moving Mirror Scanning System in Fourier Transform Infrared Spectrometer
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
Received: Sep. 28, 2014
Accepted: --
Published Online: Apr. 28, 2015
The Author Email: Lei SHI (998sl@sina.com)