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

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

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 forma...

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Veröffentlicht in:Optical materials express 2021-06, Vol.11 (6), p.1705-1712
Hauptverfasser: Shvetsov, S. A., Zolot'ko, A. S., Voronin, G. A., Emelyanenko, A., Avdeev, M. M., Bugakov, M. A., Statsenko, P. A., Trashkeev, S.
Format: Artikel
Sprache:eng
Schlagworte:
Crystal defects
Crystal structure
Electromagnetic absorption
Free surfaces
Light beams
Liquid crystals
Materials Science
Materials Science, Multidisciplinary
Nematic crystals
Optics
Physical Sciences
Science & Technology
Substrates
Technology
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Zusammenfassung: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. (c) 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
ISSN:2159-3930
2159-3930
DOI:10.1364/OME.425926