Fast-response infrared ferroelectric liquid crystal phase modulators

    Authors

    J. H. Lee; Y. H. Wu; S. T. Wu; D. W. Kim; C. J. Yu;S. D. Lee

    Comments

    Authors: contact us about adding a copy of your work at STARS@ucf.edu

    Abbreviated Journal Title

    Mol. Cryst. Liquid Cryst.

    Keywords

    alignment breaking effect; ferroelectric liquid crystal; IR application; phase modulation; vertical alignment; Crystallography

    Abstract

    A high speed phase modulator based on ferroelectric liquid crystal (FLC) is demonstrated. For uniform alignment and pure phase modulation, we propose a new FLC device using a short helical pitch material in a homeotropic alignment. This device is driven by periodic in-plane electrode stripes implemented on the surface of both cell substrates. As a result, we have obtained a large phase modulation (about 2.3 pi at lambda = 1.55 mu m under E = 2.5 V/mu m) and fast response time ( < 200 mu sec). Together with the performance characterization of our device, we discuss the alignment breaking effect which occurs near the edges of operating region.

    Journal Title

    Molecular Crystals and Liquid Crystals

    Volume

    453

    Publication Date

    1-1-2006

    Document Type

    Article

    Language

    English

    First Page

    343

    Last Page

    354

    WOS Identifier

    WOS:000238449700027

    ISSN

    1542-1406

    Share

    COinS