Digital control of spatial coherence in vortex beams

Benjamin Perez-Garcia; Adad Yepiz; Raul I. Hernandez-Aranda; Andrew Forbes; Grover A. Swartzlander Jr.

doi:10.1117/12.2238248

27 September 2016 Digital control of spatial coherence in vortex beams

Benjamin Perez-Garcia, Adad Yepiz, Raul I. Hernandez-Aranda, Andrew Forbes, Grover A. Swartzlander Jr.

Proceedings Volume 9950, Laser Beam Shaping XVII; 99500Y (2016) https://doi.org/10.1117/12.2238248
Event: SPIE Optical Engineering + Applications, 2016, San Diego, California, United States

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.

Citation Download Citation

Benjamin Perez-Garcia, Adad Yepiz, Raul I. Hernandez-Aranda, Andrew Forbes, and Grover A. Swartzlander Jr. "Digital control of spatial coherence in vortex beams", Proc. SPIE 9950, Laser Beam Shaping XVII, 99500Y (27 September 2016); https://doi.org/10.1117/12.2238248

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