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Proceedings Paper

Digital control of spatial coherence in vortex beams
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Paper Abstract

A means to digitally generate a partially coherent beam with orbital angular momentum is presented. Our approach is based on encoding the randomness of broadband light passing through a spiral phase plate in a spatial light modulator. We illustrate the technique by generating partially coherent beams with orbital angular momentum content and different coherence lengths, with no moving optical elements. We study the cross correlation spectra which yields to good agreement with theory.

Paper Details

Date Published: 27 September 2016
PDF: 6 pages
Proc. SPIE 9950, Laser Beam Shaping XVII, 99500Y (27 September 2016); doi: 10.1117/12.2238248
Show Author Affiliations
Benjamin Perez-Garcia, Tecnológico de Monterrey (Mexico)
Univ. of the Witwatersrand (South Africa)
Adad Yepiz, Tecnológico de Monterrey (Mexico)
Raul I. Hernandez-Aranda, Tecnológico de Monterrey (Mexico)
Andrew Forbes, Univ. of the Witwatersrand (South Africa)
Grover A. Swartzlander Jr., Rochester Institute of Technology (United States)

Published in SPIE Proceedings Vol. 9950:
Laser Beam Shaping XVII
Andrew Forbes; Todd E. Lizotte, Editor(s)

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