Origin of optical nonlinearity of photo-responsive liquid crystals revealed by transient grating imaging

A large optical nonlinearity has been observed for the photo-responsive liquid crystals under the condition that the nematic phase is close to the isotropic condition. The direct observation of the photo-response of a liquid crystal by the time-resolved transient grating phase imaging technique reve...

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Autores principales: Katayama, Kenji, Kato, Daiki, Nagasaka, Kin-Ichiro, Miyagawa, Minako, Sohn, Woon Yong, Lee, Kuang-Wu
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2019
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6453968/
https://www.ncbi.nlm.nih.gov/pubmed/30962459
http://dx.doi.org/10.1038/s41598-019-42140-x
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author Katayama, Kenji
Kato, Daiki
Nagasaka, Kin-Ichiro
Miyagawa, Minako
Sohn, Woon Yong
Lee, Kuang-Wu
author_facet Katayama, Kenji
Kato, Daiki
Nagasaka, Kin-Ichiro
Miyagawa, Minako
Sohn, Woon Yong
Lee, Kuang-Wu
author_sort Katayama, Kenji
collection PubMed
description A large optical nonlinearity has been observed for the photo-responsive liquid crystals under the condition that the nematic phase is close to the isotropic condition. The direct observation of the photo-response of a liquid crystal by the time-resolved transient grating phase imaging technique revealed that the optical nonlinearity was caused by the transiently generated phase formed inside the photo-induced isotropic region. A shock-like flow was observed for the formation of the transiently generated phase. Based on the theoretical calculation, we propose that a flow generated at the disordered/ordered interface induced the reorientation of the liquid crystal molecules, thereby generating a larger polarization and ultimately causing the optical nonlinearity.
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spelling pubmed-64539682019-04-12 Origin of optical nonlinearity of photo-responsive liquid crystals revealed by transient grating imaging Katayama, Kenji Kato, Daiki Nagasaka, Kin-Ichiro Miyagawa, Minako Sohn, Woon Yong Lee, Kuang-Wu Sci Rep Article A large optical nonlinearity has been observed for the photo-responsive liquid crystals under the condition that the nematic phase is close to the isotropic condition. The direct observation of the photo-response of a liquid crystal by the time-resolved transient grating phase imaging technique revealed that the optical nonlinearity was caused by the transiently generated phase formed inside the photo-induced isotropic region. A shock-like flow was observed for the formation of the transiently generated phase. Based on the theoretical calculation, we propose that a flow generated at the disordered/ordered interface induced the reorientation of the liquid crystal molecules, thereby generating a larger polarization and ultimately causing the optical nonlinearity. Nature Publishing Group UK 2019-04-08 /pmc/articles/PMC6453968/ /pubmed/30962459 http://dx.doi.org/10.1038/s41598-019-42140-x Text en © The Author(s) 2019 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Katayama, Kenji
Kato, Daiki
Nagasaka, Kin-Ichiro
Miyagawa, Minako
Sohn, Woon Yong
Lee, Kuang-Wu
Origin of optical nonlinearity of photo-responsive liquid crystals revealed by transient grating imaging
title Origin of optical nonlinearity of photo-responsive liquid crystals revealed by transient grating imaging
title_full Origin of optical nonlinearity of photo-responsive liquid crystals revealed by transient grating imaging
title_fullStr Origin of optical nonlinearity of photo-responsive liquid crystals revealed by transient grating imaging
title_full_unstemmed Origin of optical nonlinearity of photo-responsive liquid crystals revealed by transient grating imaging
title_short Origin of optical nonlinearity of photo-responsive liquid crystals revealed by transient grating imaging
title_sort origin of optical nonlinearity of photo-responsive liquid crystals revealed by transient grating imaging
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6453968/
https://www.ncbi.nlm.nih.gov/pubmed/30962459
http://dx.doi.org/10.1038/s41598-019-42140-x
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