Two ways of employing cholesteric liquid crystals in tunable dye lasers are considered: the cholesteric as distributed feedback medium and the cholesteric as resonator mirrors. In the dye doped distributed feedback cholesteric liquid crystal lasers the frequency tuning is achieved exploiting light induced effects or using a specially designed cell assembling a chiral dopant concentration gradient in combination with suitable disatribution of different dyes. Another approach represents the lasing in a multilayer system consisting of a dye doped isotropic solvent sandwiched between two CLC layers.
Different approaches of employing cholesteric liquid crystals in dye lasers
BARBERI, Riccardo Cristoforo;Maria Penelope De Santo;
2011-01-01
Abstract
Two ways of employing cholesteric liquid crystals in tunable dye lasers are considered: the cholesteric as distributed feedback medium and the cholesteric as resonator mirrors. In the dye doped distributed feedback cholesteric liquid crystal lasers the frequency tuning is achieved exploiting light induced effects or using a specially designed cell assembling a chiral dopant concentration gradient in combination with suitable disatribution of different dyes. Another approach represents the lasing in a multilayer system consisting of a dye doped isotropic solvent sandwiched between two CLC layers.File in questo prodotto:
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