&lt;title&gt;Bessel light beams in a gyrotropic medium&lt;/title&gt;

Петрова, Елена Сергеевна

doi:10.1117/12.418866

Cited by 3 publications

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“…It follows from the boundary conditions that in the crystal two Bessel beams with various phase velocities and polarization states will be propagate. Further they will be denoted with symbols right (+) and left (-) [22]. Cones of the wave vectors of these beams are circular ones.…”

Section: Bessel Beams In a Gyrotropic Mediummentioning

confidence: 99%

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Peculiarities of Acoustooptic Transformation of Bessel Light Beams in Gyrotropic Crystals (*)

Белый¹,

Казак²,

Хило³

et al. 2015

ujpa

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The peculiarities have been studied of acoustooptic (AO) diffraction of quasi-nondiffracting vector Bessel light beams (BLB) on the ultrasound waves in optical gyrotropic cubic crystals. The system of coupled equations describing the process of acoustooptic interaction is solved, diffraction efficiency has been calculated. The mathematical description of AO interaction, which differs from the similar description for the plane optical waves means of two types of synchronism, is conducted. It is shown that besides the usual longitudinal synchronism realized at the equality of phase velocities transmitted and diffracted waves, for Bessel beams it is also necessary to perform the so-called transverse synchronism. It is related with the fact, that Bessel beams with differing cone angles have different spatial structure and, consequently, various values of overlap integral with the input beam. The possibility has been investigated of transformation of the order of phase dislocation of Bessel beams wave front due to AO diffraction. It is proposed to use the process of acoustooptic diffraction in gyrotropic cubic crystals as a method for dynamic manipulation of polarization state of output Bessel beam, particularly for transformation of left-to right (and vice versa) polarization states.

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Section: Bessel Beams In a Gyrotropic Mediummentioning

confidence: 99%

“…Wave vectors k +  and k −  belonging to the pointed cones and lying within the plane (x, z) are shown in Fig.1. Thus, at incidence of TH-polarized Bessel beam on the boundary with gyrotropic medium, two BLBs of right (+) and left (−) with various phase velocities propagate [22].…”

Section: Bessel Beams In a Gyrotropic Mediummentioning

confidence: 99%