Abstract
A new iterative algorithm to be used to precisely reconstruct near-field distribution from an interferogram of a laser output generated by a cyclic radial-shearing interferometer is proposed. First, by use of a window function around the zero-frequency part of the Fourier transform of the interferogram and calculation of the inverse Fourier transform of the zero-frequency part, we obtain the background intensity distribution of the interferogram. Then, according to the iterative algorithm, the near-field distribution of the laser output is precisely reconstructed from the background intensity distribution obtained in the first step. A numerical simulation and an actual experiment of the near-field reconstruction of the laser output with arbitrary amplitude distribution are implemented successfully.
© 2005 Optical Society of America
Full Article | PDF ArticleOSA Recommended Articles
E. Kewei, Chen Zhang, Mengyang Li, Zhao Xiong, and Dahai Li
Opt. Express 23(16) 20267-20279 (2015)
Dong Liu, Yongying Yang, Lin Wang, and Yongmo Zhuo
Appl. Opt. 46(34) 8305-8314 (2007)
Olof Bryngdahl
J. Opt. Soc. Am. 60(7) 915-917 (1970)