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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 36, Iss. 22 — Nov. 15, 2011
  • pp: 4398–4400

Revealing the order of a vortex through its intensity record

Shashi Prabhakar, Ashok Kumar, J. Banerji, and R. P. Singh  »View Author Affiliations


Optics Letters, Vol. 36, Issue 22, pp. 4398-4400 (2011)
http://dx.doi.org/10.1364/OL.36.004398


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Abstract

We show that the intensity distribution of an optical vortex contains information of its order. Specifically, the number of dark rings in the Fourier transform of the intensity is found to be equal to the order of the vortex. Based on this property and the orthogonality of Laguerre polynomials, we demonstrate the feasibility of an experimental technique for determining the order of optical vortices. It shows the beauty of going to complementary spaces, which has been employed earlier also to find the information not available in other domains.

© 2011 Optical Society of America

OCIS Codes
(050.4865) Diffraction and gratings : Optical vortices
(260.6042) Physical optics : Singular optics

ToC Category:
Diffraction and Gratings

History
Original Manuscript: August 22, 2011
Revised Manuscript: October 6, 2011
Manuscript Accepted: October 8, 2011
Published: November 15, 2011

Citation
Shashi Prabhakar, Ashok Kumar, J. Banerji, and R. P. Singh, "Revealing the order of a vortex through its intensity record," Opt. Lett. 36, 4398-4400 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-22-4398

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