Application of orbital angular momentum in optical measurement

Jiao Lin; Xiao-Cong Yuan

doi:10.1117/12.826500

21 August 2009 Application of orbital angular momentum in optical measurement

Jiao Lin, Xiao-Cong Yuan

Proceedings Volume 7430, Laser Beam Shaping X; 74300G (2009) https://doi.org/10.1117/12.826500
Event: SPIE Optical Engineering + Applications, 2009, San Diego, California, United States

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.

Citation Download Citation

Jiao Lin and Xiao-Cong Yuan "Application of orbital angular momentum in optical measurement", Proc. SPIE 7430, Laser Beam Shaping X, 74300G (21 August 2009); https://doi.org/10.1117/12.826500

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