Highly efficient lasing at difference frequencies in a nematic liquid crystal

Highly efficient lasing at difference frequencies is obtained in a nematic liquid crystal excited by several visible lines from a cw argon laser with a total power of 0.08-1.5 W. The maximum conversion efficiency was {approx}1% and the quadratic susceptibility was {approx}2x10{sup -6} m V{sup -1}. T...

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Bibliographic Details
Published in:Quantum electronics (Woodbury, N.Y.) N.Y.), 2008-04, Vol.38 (4), p.373-376, Article 373
Main Authors: Trashkeev, S I, Klementyev, V M, Pozdnyakov, G A
Format: Article
Language:English
Subjects:
APPROXIMATIONS
ARGON
CALCULATION METHODS
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
CONVERSION
CRYSTALS
EFFICIENCY
ELECTROMAGNETIC RADIATION
ELEMENTS
FLUIDS
FREQUENCY DEPENDENCE
GASES
LASER RADIATION
LASERS
LIQUID CRYSTALS
LIQUIDS
NONLINEAR PROBLEMS
NONMETALS
RADIATIONS
RARE GASES
SOLIDS
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Summary:Highly efficient lasing at difference frequencies is obtained in a nematic liquid crystal excited by several visible lines from a cw argon laser with a total power of 0.08-1.5 W. The maximum conversion efficiency was {approx}1% and the quadratic susceptibility was {approx}2x10{sup -6} m V{sup -1}. The field of application of the approximate mechanism of quadratic nonlinearity and frequency conversion considered in the paper requires specification. The nonlinear conversion of radiation in a nematic crystal has specific features compared to lasing at difference frequencies in solid crystals. (nonlinear optical phenomena)
ISSN:1063-7818
1468-4799
DOI:10.1070/QE2008v038n04ABEH013719