Title

Fast-response infrared phase modulator based on polymer network liquid crystal

Authors

Authors

F. L. Peng; H. W. Chen; S. Tripathi; R. J. Twieg;S. T. Wu

Comments

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Abbreviated Journal Title

Opt. Mater. Express

Keywords

DIELECTRIC ANISOTROPY; LIGHT MODULATORS; DISPLAYS; Materials Science, Multidisciplinary; Optics

Abstract

We report a high birefringence terphenyl liquid crystal mixture, designated as M3, for infrared phase modulation with special emphasis on mid-wave infrared (MWIR). In addition to high birefringence, M3 exhibits excellent UV stability, modest dielectric anisotropy, and a very broad nematic range. The high birefringence enables a thin cell gap to be used for achieving a 2 pi phase change while maintaining a high transmittance (T>98%) in the MWIR region. To achieve fast response time, we employed a polymer network liquid crystal using M3 with 2 pi phase change at lambda= 4 mu m and 3.6-ms response time. This response time is about 100X faster than that of a nematic LC phase modulator. (C) 2015 Optical Society of America

Journal Title

Optical Materials Express

Volume

5

Issue/Number

2

Publication Date

1-1-2015

Document Type

Article

Language

English

First Page

265

Last Page

273

WOS Identifier

WOS:000350664100006

ISSN

2159-3930

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