Cai, Yangjian; Xiang, Lü; Eyyuboğlu, Halil T.; Baykal, Yahya
(Elsevier Science, 2008-06-15)
By expanding the hard aperture function into a finite sum of complex Gaussian functions, some approximate analytical formulae for the cross-spectral density of a partially coherent flattened Gaussian beam (FGB) propagating ...