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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Anthony J. Campillo
  • Vol. 30, Iss. 21 — Nov. 1, 2005
  • pp: 2933–2935

Rotating vectorial vortices produced by space-variant subwavelength gratings

Avi Niv, Gabriel Biener, Vladimir Kleiner, and Erez Hasman  »View Author Affiliations


Optics Letters, Vol. 30, Issue 21, pp. 2933-2935 (2005)
http://dx.doi.org/10.1364/OL.30.002933


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Abstract

A new class of vectorial vortex based on coherent addition of two orthogonal circularly polarized Bessel beams of identical order but with different propagation constants is presented. The transversely space-variant axially symmetric polarization distributions of these vectorial fields rotate as they propagate, while they maintain a propagation-invariant Bessel intensity distribution. These properties were demonstrated by use of discrete space-variant subwavelength gratings for 10.6 μm CO2 laser radiation. The polarization properties were verified by both full space-variant polarization analysis and measurements. Rotating intensity patterns are also demonstrated by transmitting the vectorial vortices through a linear polarizer.

© 2005 Optical Society of America

OCIS Codes
(050.2770) Diffraction and gratings : Gratings
(230.5440) Optical devices : Polarization-selective devices
(260.5430) Physical optics : Polarization

ToC Category:
Physical Optics

Citation
Avi Niv, Gabriel Biener, Vladimir Kleiner, and Erez Hasman, "Rotating vectorial vortices produced by space-variant subwavelength gratings," Opt. Lett. 30, 2933-2935 (2005)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-30-21-2933

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