Lasing in dye-doped photonic liquid crystal devices

    Authors

    Y. H. Huang; Y. Zhou;S. T. Wu

    Comments

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    Abbreviated Journal Title

    Mol. Cryst. Liquid Cryst.

    Keywords

    cholesteric liquid crystal; laser; lasing efficiency; photonic liquid; crystal; FEMTOSECOND PULSES; FIBER; COMPRESSION; LASER; Crystallography

    Abstract

    We have investigated the effects of pumping laser's polarization and incident angles, dye concentration, cell gap, and lasing wavelength on the lasing efficiency of the dye doped cholesteric liquid crystal (CLC) devices. These factors impact the lasing efficiency due to the existence of the photon bleaching and quench in the dye molecules, the competition of the optical gain and loss in the media, and the helical layers dependent amplification provided by the distributed feedback. The maximum lasing efficiency (similar to 0.5%) was obtained at lambda similar to 608 nm from a 10 mu m CLC sample doped with 1 wt% DCM when the pump laser beam is left-handed circularly polarized and the incident angle is normal to the sample.

    Journal Title

    Molecular Crystals and Liquid Crystals

    Volume

    453

    Publication Date

    1-1-2006

    Document Type

    Article

    Language

    English

    First Page

    251

    Last Page

    262

    WOS Identifier

    WOS:000238449700019

    ISSN

    1542-1406

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