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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
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 | ||||||
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| Subjects: | Q Science > QC Physics Q Science > QD Chemistry |
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| 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: |
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| 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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