Polarization-independent and fast-response phase modulators using double-layered liquid crystal gels

Hongwen Ren*, Yi-Hsin Lin, Shin Tson Wu

*Corresponding author for this work

Research output: Contribution to journalArticle

41 Scopus citations

Abstract

A polarization-independent phase modulator using two thin homogeneously stratified but orthogonally oriented liquid crystal (LC) gels is demonstrated. In addition to polarization independence and submillisecond response time, the LC gel possesses a much larger phase change and lower operating voltage than the nanosized polymer-dispersed liquid crystal. For a 16 μm transmissive E48 LC gel, the phase shift exceeds 1π at λ=633 nm with an electric field strength of ∼11 Vrms μm. Potential applications of such a phase modulator for laser beam steering, microlens array, and switchable two- and three-dimensional LC displays are foreseeable.

Original languageEnglish
Article number061123
JournalApplied Physics Letters
Volume88
Issue number6
DOIs
StatePublished - 1 Feb 2006

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