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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 34, Iss. 8 — Apr. 15, 2009
  • pp: 1225–1227

Light propagation in a birefringent plate with topological charge

Ebrahim Karimi, Bruno Piccirillo, Lorenzo Marrucci, and Enrico Santamato  »View Author Affiliations


Optics Letters, Vol. 34, Issue 8, pp. 1225-1227 (2009)
http://dx.doi.org/10.1364/OL.34.001225


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Abstract

We calculated the Fresnel paraxial propagator in a birefringent plate having topological charge q at its center, named “q-plate.” We studied the change of the beam transverse profile when it traverses the plate. An analytical closed form of the beam profile propagating in the q-plate can be found for many important specific input beam profiles. We paid particular attention to the plate having a topological unit charge and found that if small losses due to reflection, absorption, and scattering are neglected, the plate can convert the photon spin into orbital angular momentum with up to 100% efficiency provided the thickness of the plate is less than the Rayleigh range of the incident beam.

© 2009 Optical Society of America

OCIS Codes
(050.1960) Diffraction and gratings : Diffraction theory
(260.1960) Physical optics : Diffraction theory
(260.6042) Physical optics : Singular optics

ToC Category:
Physical Optics

History
Original Manuscript: December 2, 2008
Manuscript Accepted: March 3, 2009
Published: April 8, 2009

Citation
Ebrahim Karimi, Bruno Piccirillo, Lorenzo Marrucci, and Enrico Santamato, "Light propagation in a birefringent plate with topological charge," Opt. Lett. 34, 1225-1227 (2009)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-34-8-1225

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