Light-induced umbilical defects due to temperature gradients in nematic liquid crystal with a free surface

S. A. Shvetsov ^{1, 2}

A.S. Zolot'ko ²

G.A. Voronin ^{2, 3}

A. V. Emelyanenko ¹

M M Avdeev ¹

Miron Bugakov ¹

P A Statsenko ⁴

S I Trashkeev ^{4, 5}

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Lomonosov Moscow State University |

LEBEDEV PHYSICAL INSTITUTE |

Moscow Institute of Physics and Technology |

⁴

Institute of Laser Physics |

⁵

Voevodsky Institute of Chemical Kinetics and Combustion |

Publication type: Journal Article

Publication date: 2021-05-13

Optica Publishing Group

Journal: Optical Materials Express

scimago Q2

SJR: 0.662

CiteScore: 5.5

Impact factor: 2.8

ISSN: 21593930

DOI: 10.1364/ome.425926

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Electronic, Optical and Magnetic Materials

Abstract

We report the light beam action on the nematic liquid crystal film with a free surface. It was found that a weak light absorption by the liquid crystal substrate dramatically changes the orienting properties of the light beam; in particular, a thermal gradient field induces an umbilical defect formation.

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