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The vortex-beam 'precession' in a rotating uniaxial crystal

We consider theoretically and experimentally the precession of the optical vortex in a singular beam propagating nearly perpendicular to the crystal optical axis, the beam and the crystal axis rotating with different angular velocities. The precession is a result of anisotropic diffraction caused by...

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Bibliographic Details
Published in:Journal of optics (2010) 2009-09, Vol.11 (9), p.094008-094008 (8)
Main Authors: Fadeyeva, T A, Rubass, A F, Sokolenko, B V, Volyar, A V
Format: Article
Language:English
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Summary:We consider theoretically and experimentally the precession of the optical vortex in a singular beam propagating nearly perpendicular to the crystal optical axis, the beam and the crystal axis rotating with different angular velocities. The precession is a result of anisotropic diffraction caused by different scales along the major axes in a uniaxial crystal. Also, we analyze the properties of an optical reducer consisting of two rotating crystals and a quarter-wave retarder between them, permitting us to control the form of the vortex trajectory and the angular velocity of the vortex beam.
ISSN:1464-4258
2040-8978
1741-3567
DOI:10.1088/1464-4258/11/9/094008