Formation of Optical Vortices by the Use of Holograms with an Asymmetric Fringe Profile

Aksenov, V. P.; Venediktov, Vladimir Yu.; Sevryugin, Alexander; Tursunov, Ibrohim

doi:10.1134/s0030400x18020029

Cited by 13 publications

(2 citation statements)

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“…In the last decade, there has been a major development in the methods needed for the formation of laser vortices. The application of different optical elements, such as optical holograms and masks, are mainly used to obtain laser vortices [5,6,7,8,9]. That makes them suitable for studing the evolution of laser light in waveguides, improving the performance of optical tweezers, increasing the sensitivity and resolution of optical devices, microscopy, frequency mixing, etc.…”

Section: Introductionmentioning

confidence: 99%

New vector type optical vortex structures in isotropic media

Slavchev

Dakova

et al. 2023

J. Phys.: Conf. Ser.

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In the present work, the formation of vector-type vortex structures in isotropic media is studied. These vortices exist in the electric field components and generate a depolarization in the vector field of the laser spot. Their behavior is governed by a system of amplitude equations. Additionally, new solutions have been found that describe similar types of vortex structures in an optical fiber. The optical vortices admit only amplitude-type singularities. The vortex structures observed within the vector amplitude function have ring-like patterns. The variation of the intensities of the x and y components of the amplitude function along the axis of the fiber is investigated.

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Section: Introductionmentioning

confidence: 99%

New vector type optical vortex structures in isotropic media

Slavchev

Dakova

et al. 2023

J. Phys.: Conf. Ser.

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“…The well-known optical vortex structures, investigated in the frames of the 2D paraxial scalar equation of Leontovich [1,2] can be generated outside the laser cavity with the help of different optical masks and holograms [3,4,5,6,7,8]. They have helical phase distribution or angular dependence of the electric field.…”

Section: Introductionmentioning

confidence: 99%

Laser ring structures in step-index fibers

Slavchev

Dakova²,

Gocheva³

et al. 2022

J. Phys.: Conf. Ser.

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The formation and propagation of optical ring structures, given by a system of amplitude equations for the components of the electric field is investigated. The calculations are made in approximation of second-order linear dispersion and self-phase modulation. New class analytical solutions, characterizing the generation and evolution of laser ring structures in optical waveguides with step-index profile and anomalous dispersion, are described in the present work. The stability of these optical formations is a result of the specific combination of nonlinearity, diffraction and angular distribution. Laser vortices have an amplitude type of singularity which appears as depolarization of the vector field in the light radiation spot.

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