Journal
LIQUID CRYSTALS
Volume 30, Issue 12, Pages 1391-1400Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/02678290310001621921
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Glass-forming cholesteric liquid crystals were studied as promising dye-doped lasing materials at different pumping energies and temperatures. Cholesteric samples doped with laser dye pyrromethane 597 were pumped by Nd:YAG laser. Lasing was found to depend strongly on the vitrification rate of cholesteric samples, their temperature and multidomain structure. The lasing threshold and intensity as a function of thickness of cholesteric resonator are determined by two competing factors: narrowing of the band edge modes and increasing disorder.
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