Title

Sub-millisecond response phase modulator using a low crossover frequency dual-frequency liquid crystal

Authors

Authors

H. Q. Xianyu; S. Gauza;S. T. Wu

Comments

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Abbreviated Journal Title

Liq. Cryst.

Keywords

dual-frequency liquid crystal; fast response; phase modulator; dielectric relaxation; HIGH-BIREFRINGENCE; TIME; TEMPERATURE; Chemistry, Multidisciplinary; Crystallography; Materials Science, ; Multidisciplinary

Abstract

A high birefringence (n=0.292 at =633nm, 25C) and low crossover frequency (1kHz at T=25C) dual-frequency liquid crystal (DFLC) mixture was developed. The high birefringence enabled us to use a thin liquid crystal cell, which is helpful for fast response time and low operating voltage. The initially low crossover frequency allowed us to operate the DFLC device at an elevated temperature, which significantly lowers the viscosity while keeping the crossover frequency in an acceptable range (10kHz). We demonstrated a 2 phase shifter at =633nm using such a DFLC and obtained a sub-millisecond response time at T45C. This type of DFLC mixture together with elevated temperature operation opens a new way for achieving fast response time.

Journal Title

Liquid Crystals

Volume

35

Issue/Number

12

Publication Date

1-1-2008

Document Type

Article

Language

English

First Page

1409

Last Page

1413

WOS Identifier

WOS:000261739300010

ISSN

0267-8292

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