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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 37, Iss. 23 — Dec. 1, 2012
  • pp: 4946–4948

Optical angular momentum conversion in a nanoslit

Philip F. Chimento, Paul F. A. Alkemade, Gert W. ’t Hooft, and Eric R. Eliel  »View Author Affiliations

Optics Letters, Vol. 37, Issue 23, pp. 4946-4948 (2012)

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We demonstrate partial conversion of circularly polarized light into orbital angular momentum-carrying vortex light with opposite-handed circular polarization. This conversion is accomplished in a novel manner using the birefringent properties of a circular subwavelength slit in a thin metal film. Our technique can be applied over a very wide range of frequencies and even allows the creation of anisotropic vortices when using a slit without circular symmetry.

© 2012 Optical Society of America

OCIS Codes
(050.1930) Diffraction and gratings : Dichroism
(230.7370) Optical devices : Waveguides
(240.6680) Optics at surfaces : Surface plasmons
(260.1440) Physical optics : Birefringence
(050.4865) Diffraction and gratings : Optical vortices
(310.6628) Thin films : Subwavelength structures, nanostructures

ToC Category:
Diffraction and Gratings

Original Manuscript: October 9, 2012
Manuscript Accepted: October 18, 2012
Published: November 28, 2012

Philip F. Chimento, Paul F. A. Alkemade, Gert W. ’t Hooft, and Eric R. Eliel, "Optical angular momentum conversion in a nanoslit," Opt. Lett. 37, 4946-4948 (2012)

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