Title

Coherence And Polarization Of Electromagnetic Beams Modulated By Random Phase Screens And Their Changes On Propagation In Free Space

Abstract

The spectral degree of coherence and of polarization of some model electromagnetic beams modulated by a polarization-dependent phase-modulating device, such as a liquid-crystal spatial light modulator, acting as a random phase screen are examined on the basis of the recent theory formulated in terms of the 2 × 2 cross-spectral density matrix of the beam. The phase-modulating device is assumed to have strong polarization dependence that modulates only one of the orthogonal components of the electric vector, and the phase of the phase-modulating device is assumed to be a random function of position imitating a random phase screen and is assumed to obey Gaussian statistics with zero mean. The propagation of the modulated beam is also examined to show how the spectral degrees of coherence and of polarization of the beam change on propagation, even in free space. The result are illustrated by numerical examples. © 2004 Optical Society of America.

Publication Date

1-1-2004

Publication Title

Journal of the Optical Society of America A: Optics and Image Science, and Vision

Volume

21

Issue

10

Number of Pages

1907-1916

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1364/JOSAA.21.001907

Socpus ID

5644275530 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/5644275530

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