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Proceedings Paper

Application of orbital angular momentum in optical measurement
Author(s): Jiao Lin; Xiao-Cong Yuan
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Paper Abstract

The orbital angular momentum (OAM) of a vortex beam depends on the selection of its rotation axis. Therefore, the associated OAM spectrum is subject to the alignment of beam axis as well. It has been demonstrated that a slight misalignment can cause a large change in OAM spectrum. By investigating the relationship between misalignment and the resultant OAM spectrum change, we propose a method of measuring the titling angle and displacement to the reference axis. This approach can be used in correcting the alignment of free-space optical communication system.

Paper Details

Date Published: 21 August 2009
PDF: 9 pages
Proc. SPIE 7430, Laser Beam Shaping X, 74300G (21 August 2009); doi: 10.1117/12.826500
Show Author Affiliations
Jiao Lin, Nanyang Technological Univ. (Singapore)
Xiao-Cong Yuan, Nankai Univ. (China)

Published in SPIE Proceedings Vol. 7430:
Laser Beam Shaping X
Andrew Forbes; Todd E. Lizotte, Editor(s)

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