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 ArticleMore Like This
E. Kewei, Chen Zhang, Mengyang Li, Zhao Xiong, and Dahai Li
Opt. Express 23(16) 20267-20279 (2015)
Sabrina Velghe, Jérôme Primot, Nicolas Guérineau, Mathieu Cohen, and Benoit Wattellier
Opt. Lett. 30(3) 245-247 (2005)
Olof Bryngdahl
J. Opt. Soc. Am. 61(2) 169-172 (1971)