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Proceedings Paper

The optimal design method for the extended source of interferometer
Author(s): Yinlong Hou; Lin Li; Shanshan Wang; Xiao Wang; Haijun Zang; Qiudong Zhu; Dawei Li
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Paper Abstract

The optimal design for an extended source interferometer is discussed in this paper. Compared with the classical point source interferometer, interferometer with an extended source can decrease the coherent noise, dust/defects scattering effects and high-frequency error of reference surface significantly. The adjustable extended source model is introduced. The size, shape, and intensity distribution of the source are optimized by using the interferometer simulation platform which is established by Zemax optical design software and Matlab data analysis software in this paper. After determined parameters of the basic structure of the interferometer, an interferometer model was set up by using muti-configuration in the sequential mode of Zemax. The communication technique of DDE (Dynamic Data Exchange) between Zemax and Matlab was applied to the numeric simulation process. Under the control of Matlab, the field parameters of the optical system can be rectified, and it was easy to get a series of interferogram data. So it was convenient to calculate the visibility of interference fringes. The relation curves between the spatial coherence and the size, shape, intensity distribution of the extended source can be plotted by Matlab. In order to meet the operating requirements of different coherence lengths, Zemax was used to optimize the concrete forms of light sources. Simulation results show that short coherence length can be realized by the Sinc2—shaped extended source, while source of Cos—shape or Comb—shape can realize long coherence length.

Paper Details

Date Published: 31 December 2013
PDF: 8 pages
Proc. SPIE 9042, 2013 International Conference on Optical Instruments and Technology: Optical Systems and Modern Optoelectronic Instruments, 90421A (31 December 2013); doi: 10.1117/12.2037492
Show Author Affiliations
Yinlong Hou, Beijing Institute of Technology (China)
Lin Li, Beijing Institute of Technology (China)
Shanshan Wang, Beijing Institute of Technology (China)
Xiao Wang, China North Industries Navigation and Control Technology Research Institute (China)
Haijun Zang, Beijing Institute of Technology (China)
Qiudong Zhu, Beijing Institute of Technology (China)
Dawei Li, Beijing Institute of Technology (China)

Published in SPIE Proceedings Vol. 9042:
2013 International Conference on Optical Instruments and Technology: Optical Systems and Modern Optoelectronic Instruments
Yongtian Wang; Xiaocong Yuan; Yunlong Sheng; Kimio Tatsuno, Editor(s)

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