Experimental investigation of laser emission of dye-doped cholesteric liquid crystals with a cholesteric reflector

    Authors

    Y. Zhou; Y. H. Huang; A. Rapaport; M. Bass;S. T. Wu

    Comments

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    Abbreviated Journal Title

    Mol. Cryst. Liquid Cryst.

    Keywords

    cholesteric liquid crystal laser; cholesteric liquid crystal reflector; laser emission; laser enhancement; PHOTONIC BAND-EDGE; FILM; Crystallography

    Abstract

    Dye-doped cholesteric liquid crystal (CLC) behaves like a one-dimensional photonic crystal laser when pumped by a second harmonic Nd-YAG pulsed laser. Usually circularly polarized laser light in the same sense as the cholesteric helix is emitted from both directions of the lasing cell. In this paper, we experimentally demonstrate the laser emission enhancement and investigate the corresponding polarization state from the dye-doped CLC laser in stack with another CLC reflector. Cell gap and dye concentration are important factors affecting the optical efficiency of the CLC lasers.

    Journal Title

    Molecular Crystals and Liquid Crystals

    Volume

    454

    Publication Date

    1-1-2006

    Document Type

    Article

    Language

    English

    First Page

    377

    Last Page

    385

    WOS Identifier

    WOS:000238565000031

    ISSN

    1542-1406

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