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Generalized M2 factor of a partially coherent beam propagating through a circular hard-edged aperture
Xiaoliang Chu1, Bin Zhang, Qiao Wen
1College of Electronics Information, Sichuan University, ChengDu 610064, China. chu-xiaoliang@sohu.com.cn
Applied Optics
|August 19, 2003
Abstract:
The second-order intensity moments and the beam-propagation M2 factor of partially coherent beams that propagate through a circular-symmetry hard-edged aperture are in the cylindrical coordinate system. AJo-correlated Schell-model beam with a Gaussian intensity distribution is an example. The analytical expression for the generalized M2 factor is derived. The numerical calculation results are analyzed.