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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 38, Iss. 16 — Aug. 15, 2013
  • pp: 3047–3049

Evaluating Laguerre–Gaussian beams with an invariant parameter

Junling Long, Ruifeng Liu, Feiran Wang, Yunlong Wang, Pei Zhang, Hong Gao, and Fuli Li  »View Author Affiliations


Optics Letters, Vol. 38, Issue 16, pp. 3047-3049 (2013)
http://dx.doi.org/10.1364/OL.38.003047


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Abstract

We define a new parameter for Laguerre–Gaussian (LG) beams, named Q p , l , which is only related to mode indices p and l . This parameter is able to distinguish and evaluate LG beams. The Q p , l values are first calculated theoretically and then measured experimentally for several different LG beams. Another mode quality parameter, M 2 values, are also measured. The comparison between Q p , l and M 2 shows the same trend for the quality of the LG mode, while the measurement of Q p , l is much easier than M 2 .

© 2013 Optical Society of America

OCIS Codes
(120.3940) Instrumentation, measurement, and metrology : Metrology
(140.3295) Lasers and laser optics : Laser beam characterization
(050.4865) Diffraction and gratings : Optical vortices

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: May 27, 2013
Revised Manuscript: July 1, 2013
Manuscript Accepted: July 16, 2013
Published: August 8, 2013

Citation
Junling Long, Ruifeng Liu, Feiran Wang, Yunlong Wang, Pei Zhang, Hong Gao, and Fuli Li, "Evaluating Laguerre–Gaussian beams with an invariant parameter," Opt. Lett. 38, 3047-3049 (2013)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-38-16-3047

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