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Proceedings Paper

A new method for laser beam phase measurement by using the shear interferometer
Author(s): Yingjian Wang; Yinbo Huang; Zhenbo Bi
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Paper Abstract

A new method, named FSI (Fourier Shear Interferometry), is suggested to calculate the phase derivative by Fourier transform of the lateral shear fringes. After filtering intensity spectrum AF2 (fx, fy)in the spectrum of the shear fringes, the cross term of the fringe’s intensity, i.e., A(x,y)A(x + s, y)exp[ixφ(x,y)], is obtained by the reverse Fourier transform, and then ▵φ(x, y) can be easily obtained if only |▵φ(x, y)|less than or equal to π. The numerical simulation results demonstrate feasibility and accuracy of the suggested method.

Paper Details

Date Published: 23 December 2004
PDF: 4 pages
Proc. SPIE 5639, Adaptive Optics and Applications III, (23 December 2004); doi: 10.1117/12.580773
Show Author Affiliations
Yingjian Wang, Anhui Institute of Optics and Fine Mechanics, CAS (China)
Yinbo Huang, Anhui Institute of Optics and Fine Mechanics, CAS (China)
Zhenbo Bi, Anhui Institute of Optics and Fine Mechanics, CAS (China)

Published in SPIE Proceedings Vol. 5639:
Adaptive Optics and Applications III
Wenhan Jiang; Yoshiji Suzuki, Editor(s)

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