Transformation of phase dislocations under acousto-optic interaction of optical and acoustical Bessel beams

The generation of wavefront phase dislocations of vortex Bessel light beams under acousto-optic (AO) diffraction in uniaxial crystals has been investigated. For the first time the process of AO interaction is studied with participation of Bessel acoustic beams instead of plane waves. A mathematical...

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Bibliographic Details
Published in:Journal of optics (2010) 2016-07, Vol.18 (7), p.74002
Main Authors: Belyi, V N, Khilo, P A, Kazak, N S, Khilo, N A
Format: Article
Language:English
Subjects:
angular momentum of light
Bessel acoustic beam
Bessel light beams
phase dislocations
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Summary:The generation of wavefront phase dislocations of vortex Bessel light beams under acousto-optic (AO) diffraction in uniaxial crystals has been investigated. For the first time the process of AO interaction is studied with participation of Bessel acoustic beams instead of plane waves. A mathematical description of AO interaction is provided, which supposes the satisfaction of two types of phase-matching condition. The acousto-optic processes of transferring optical singularities onto the wavefront of BLBs are investigated and the generation of high-order optical vortices is considered at the interaction of optical and acoustical Bessel beams. The change of Bessel function order or phase dislocation order is explained as a result of the spin-orbital interaction under acousto-optic diffraction of vortex Bessel beams.
ISSN:2040-8978
2040-8986
DOI:10.1088/2040-8978/18/7/074002