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Optical Engineering

Propagation law of partially coherent vortex beam
Author(s): Panfeng Ding; Hongliang Ren
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Paper Abstract

We propose the analytic solution of cross-spectral density matrix (CSDM) of a partially coherent vortex beam while propagating. The solution to the propagation law is appropriate for a Gaussian Schell-model vortex beam to any order. It is found that the solution of CSDM of a Gaussian Schell-model beam revealed by Emil Wolf is a special instance. By this general solution, the intensity distribution, especially the degree of polarization and the mean-squared beam width of the partially coherent vortex beam, are investigated. It is found that the propagation character of the beam width is decided by the correlation-length, and that the topological charge affects only the value of the beam width.

Paper Details

Date Published: 7 February 2012
PDF: 7 pages
Opt. Eng. 51(1) 018002 doi: 10.1117/1.OE.51.1.018002
Published in: Optical Engineering Volume 51, Issue 1
Show Author Affiliations
Panfeng Ding, Huaqiao Univ. (China)
Hongliang Ren, Huaqiao Univ. (China)

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