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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Editor: Franco Gori
  • Vol. 27, Iss. 1 — Jan. 1, 2010
  • pp: 13–20

Nondiffracting vortex-beams in a birefringent chiral crystal

Tatyana A. Fadeyeva and Alexander V. Volyar  »View Author Affiliations


JOSA A, Vol. 27, Issue 1, pp. 13-20 (2010)
http://dx.doi.org/10.1364/JOSAA.27.000013


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Abstract

A vector-wave analysis of nondiffracting beams propagating along a birefringent chiral crystal for the case of tensor character of both the optical activity and linear birefringence is presented. We have written characteristic equations and found propagation constants and amplitude parameters of the eigenmodes. The characteristic curves have anomalous zones described by an isotropic point or a gap-point, provided that the elements of an optical activity tensor obey the requirement g 11 g 33 < 0 , | g 33 | > | g 11 | . In the anomalous zone, a nondiffracting beam can propagate through a purely chiral crystal as if through an isotropic medium. We have shown that the field of eigenmodes is nonuniformly polarized in the beam cross section, while the field with the initially uniform polarization distribution experiences periodic transformations. We have revealed that even a purely chiral crystal without linear birefringence can generate optical vortices in an initially vortex-free Bessel beam.

© 2009 Optical Society of America

OCIS Codes
(260.0260) Physical optics : Physical optics
(260.1180) Physical optics : Crystal optics
(350.5030) Other areas of optics : Phase
(260.6042) Physical optics : Singular optics

ToC Category:
Physical Optics

History
Original Manuscript: August 18, 2009
Revised Manuscript: November 3, 2009
Manuscript Accepted: November 3, 2009
Published: December 3, 2009

Citation
Tatyana A. Fadeyeva and Alexander V. Volyar, "Nondiffracting vortex-beams in a birefringent chiral crystal," J. Opt. Soc. Am. A 27, 13-20 (2010)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-27-1-13

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