Enhanced nonlinearity by H-bonded polymer-dye complex in liquid crystal for holographic gratings

Elena Ouskova; Andrii Pshenychnyi; Antoni Sánchez-Ferrer; Dariia Lysenko; Jaana Vapaavuori; Matti Kaivola

doi:10.1364/JOSAB.31.001456

Enhanced nonlinearity by H-bonded polymer-dye complex in liquid crystal for holographic gratings

Elena Ouskova, Andrii Pshenychnyi, Antoni Sánchez-Ferrer, Dariia Lysenko, Jaana Vapaavuori, Matti Kaivola

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

7 Citations (Scopus)

Abstract

We have studied a new heterogeneous liquid-crystalline material where H-bonded polymer-azo-dye complexes are used as dopants to the liquid crystal (LC) bulk at a very low concentration. Double enhancement of the holographic gratings' diffraction efficiency occurred in the complex-doped LC compared to dye-doped LC. The grating formation/relaxation processes in complex-doped LC showed anomalies that were explained by the presence of polymer with H bonds. The gratings appeared to be formed due to a change of both the absorption coefficient and refractive index. Using such complexes as dopants gives perspectives for tuning and control of the LC properties, and for possible optical applications.

Original language	English
Pages (from-to)	1456-1464
Number of pages	9
Journal	Journal of the Optical Society of America B
Volume	31
Issue number	7
DOIs	https://doi.org/10.1364/JOSAB.31.001456
Publication status	Published - 1 Jul 2014
Publication type	A1 Journal article-refereed

ASJC Scopus subject areas

Statistical and Nonlinear Physics
Atomic and Molecular Physics, and Optics

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abstract = "We have studied a new heterogeneous liquid-crystalline material where H-bonded polymer-azo-dye complexes are used as dopants to the liquid crystal (LC) bulk at a very low concentration. Double enhancement of the holographic gratings' diffraction efficiency occurred in the complex-doped LC compared to dye-doped LC. The grating formation/relaxation processes in complex-doped LC showed anomalies that were explained by the presence of polymer with H bonds. The gratings appeared to be formed due to a change of both the absorption coefficient and refractive index. Using such complexes as dopants gives perspectives for tuning and control of the LC properties, and for possible optical applications.",

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AU - Ouskova, Elena

AU - Pshenychnyi, Andrii

AU - Sánchez-Ferrer, Antoni

AU - Lysenko, Dariia

AU - Vapaavuori, Jaana

AU - Kaivola, Matti

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AB - We have studied a new heterogeneous liquid-crystalline material where H-bonded polymer-azo-dye complexes are used as dopants to the liquid crystal (LC) bulk at a very low concentration. Double enhancement of the holographic gratings' diffraction efficiency occurred in the complex-doped LC compared to dye-doped LC. The grating formation/relaxation processes in complex-doped LC showed anomalies that were explained by the presence of polymer with H bonds. The gratings appeared to be formed due to a change of both the absorption coefficient and refractive index. Using such complexes as dopants gives perspectives for tuning and control of the LC properties, and for possible optical applications.

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Enhanced nonlinearity by H-bonded polymer-dye complex in liquid crystal for holographic gratings

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