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Proceedings Paper

Interference characteristic analysis on RoF illumination
Author(s): Xiaojun Cao; Jianqiang Zhu; Qiang Lin
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Paper Abstract

The coherent artifacts have harmful influence on the measurement results and make the precision worse during the optical testing. Using RoF illumination method, we can get evener coherent artifacts on the interferogram, improve the gain in S/N ratio, and reduce the measurement error. In this paper we analyze the RoF illumination interferometer, compare the spatial coherence of the RoF and that of the quasi-point light source, get the intensity distribution of the interference field, obtain the fringe visibility, and make a further analysis of the result precision dependence on RoF radius and cavity length.

Paper Details

Date Published: 1 February 2006
PDF: 7 pages
Proc. SPIE 6034, ICO20: Optical Design and Fabrication, 60341Q (1 February 2006); doi: 10.1117/12.668164
Show Author Affiliations
Xiaojun Cao, Shanghai Institute of Optics and Fine Mechanics (China)
Jianqiang Zhu, Shanghai Institute of Optics and Fine Mechanics (China)
Qiang Lin, Shanghai Institute of Optics and Fine Mechanics (China)

Published in SPIE Proceedings Vol. 6034:
ICO20: Optical Design and Fabrication
James Breckinridge; Yongtian Wang, Editor(s)

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