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Broad spectrum measurement of the birefringence of an isothiocyanate based liquid crystal

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Trushkevych, Oksana, Xu, Huan, Lu, Tianxin, Zeitler, J. Axel, Rungsawang, Rakchanok, Gölden, Felix, Collings, Neil and Crossland, William A. (2010) Broad spectrum measurement of the birefringence of an isothiocyanate based liquid crystal. Applied Optics, 49 (28). pp. 5212-5216. doi:10.1364/AO.49.005212

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Official URL: http://dx.doi.org/10.1364/AO.49.005212

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Abstract

Tunable materials with high anisotropy of refractive index and low loss are of particular interest in the microwave and terahertz range. Nematic liquid crystals are highly sensitive to electric and magnetic fields and may be designed to have particularly high birefringence. In this paper we investigate birefringence and absorption losses in an isothiocyanate based liquid crystal (designed for high anisotropy) in a broad range of the electromagnetic spectrum, namely 0.1–4 GHz, 30 GHz, 0.5–1.8 THz, and in the visible and near-infrared region (400 nm–1600 nm). We report high birefringence (Δn = 0.19 − 0.395) and low loss in this material. This is attractive for tunable microwave and terahertz device applications.

Item Type: Journal Article
Subjects: Q Science > QC Physics
Q Science > QD Chemistry
Divisions: Faculty of Science > Physics
Library of Congress Subject Headings (LCSH): Liquid crystals, Refraction, Double, Anisotropy
Journal or Publication Title: Applied Optics
Publisher: Optical Society of America
ISSN: 0003-6935
Official Date: 20 September 2010
Dates:
DateEvent
20 September 2010Published
30 August 2010Accepted
Volume: 49
Number: 28
Page Range: pp. 5212-5216
DOI: 10.1364/AO.49.005212
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access
Funder: Engineering and Physical Sciences Research Council (EPSRC), University of Cambridge. Centre for Advanced Photonics and Electronics (CAPE), ALPS Electric (Firm), Dow Corning Corporation
Grant number: Platform Grant GR/S12074/02 (EPSRC)

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