Premium
Laser Emission in a Dye Doped Cholesteric Polymer Network
Author(s) -
Schmidtke J.,
Stille W.,
Finkelmann H.,
Kim S.T.
Publication year - 2002
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/1521-4095(20020517)14:10<746::aid-adma746>3.0.co;2-5
Subject(s) - materials science , lasing threshold , cholesteric liquid crystal , laser , doping , fluorescence , dye laser , molar mass , optoelectronics , liquid crystal , polymer , dopant , amplified spontaneous emission , optics , composite material , physics , wavelength
A crosslinked cholesteric network doped with a fluorescent dye exhibits lasing efficiencies that are more than one order of magnitude higher than those of a low molar mass cholesteric liquid crystal (CLC) with similar optical parameters. The emission from the samples has been found to be stable, whereby the lasing threshold is much lower than that of the CLC compound. Films of the crosslinked sample can easily be peeled off their glass substrates and can be microstructured or coated to change the polarization of the emitted laser light.