Dipole azimuthons and vortex charge flipping in nematic liquid crystals

Yana V. Izdebskaya; Anton S. Desyatnikov; Gaetano Assanto; Yuri S. Kivshar

doi:10.1364/OE.19.021457

Dipole azimuthons and vortex charge flipping in nematic liquid crystals

Yana V. Izdebskaya^*, Anton S. Desyatnikov, Gaetano Assanto, Yuri S. Kivshar

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

48 Citations (Scopus)

Abstract

We demonstrate self-trapped laser beams carrying phase singularities in nematic liquid crystals. We experimentally observe the astigmatic transformation of vortex beams into spiraling dipole azimuthons accompanied by power-dependent charge-flipping of the on-axis phase singularity. The latter topological reactions involve triplets of vortex lines and resemble pitchfork bifurcations.

Original language	English
Pages (from-to)	21457-21466
Number of pages	10
Journal	Optics Express
Volume	19
Issue number	22
DOIs	https://doi.org/10.1364/OE.19.021457
Publication status	Published - 24 Oct 2011

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title = "Dipole azimuthons and vortex charge flipping in nematic liquid crystals",

abstract = "We demonstrate self-trapped laser beams carrying phase singularities in nematic liquid crystals. We experimentally observe the astigmatic transformation of vortex beams into spiraling dipole azimuthons accompanied by power-dependent charge-flipping of the on-axis phase singularity. The latter topological reactions involve triplets of vortex lines and resemble pitchfork bifurcations.",

author = "Izdebskaya, \{Yana V.\} and Desyatnikov, \{Anton S.\} and Gaetano Assanto and Kivshar, \{Yuri S.\}",

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T1 - Dipole azimuthons and vortex charge flipping in nematic liquid crystals

AU - Izdebskaya, Yana V.

AU - Desyatnikov, Anton S.

AU - Assanto, Gaetano

AU - Kivshar, Yuri S.

PY - 2011/10/24

Y1 - 2011/10/24

N2 - We demonstrate self-trapped laser beams carrying phase singularities in nematic liquid crystals. We experimentally observe the astigmatic transformation of vortex beams into spiraling dipole azimuthons accompanied by power-dependent charge-flipping of the on-axis phase singularity. The latter topological reactions involve triplets of vortex lines and resemble pitchfork bifurcations.

AB - We demonstrate self-trapped laser beams carrying phase singularities in nematic liquid crystals. We experimentally observe the astigmatic transformation of vortex beams into spiraling dipole azimuthons accompanied by power-dependent charge-flipping of the on-axis phase singularity. The latter topological reactions involve triplets of vortex lines and resemble pitchfork bifurcations.

UR - https://www.scopus.com/pages/publications/80054909130

U2 - 10.1364/OE.19.021457

DO - 10.1364/OE.19.021457

M3 - Article

SN - 1094-4087

VL - 19

SP - 21457

EP - 21466

JO - Optics Express

JF - Optics Express

IS - 22

ER -

Dipole azimuthons and vortex charge flipping in nematic liquid crystals

Abstract

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