Title

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

Authors

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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