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Optics Letters

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  • Vol. 28, Iss. 23 — Dec. 1, 2003
  • pp: 2285–2287

Observation of the orbital angular momentum spectrum of a light beam

M. V. Vasnetsov, J. P. Torres, D. V. Petrov, and Lluis Torner  »View Author Affiliations


Optics Letters, Vol. 28, Issue 23, pp. 2285-2287 (2003)
http://dx.doi.org/10.1364/OL.28.002285


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Abstract

We demonstrate an experimental scheme that allows the elucidation of the orbital angular momentum discrete spectrum of an arbitrary light signal. The orbital angular momentum spectrum is represented in a Laguerre–Gaussian mode base, and the spectral components are resolved in the frequency domain by exploiting the Doppler frequency shift that is imparted to rotating light beams.

© 2003 Optical Society of America

OCIS Codes
(070.6020) Fourier optics and signal processing : Continuous optical signal processing
(100.2650) Image processing : Fringe analysis
(120.3180) Instrumentation, measurement, and metrology : Interferometry

Citation
M. V. Vasnetsov, J. P. Torres, D. V. Petrov, and Lluis Torner, "Observation of the orbital angular momentum spectrum of a light beam," Opt. Lett. 28, 2285-2287 (2003)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-28-23-2285


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