Accurate control of laser emission from cholesteric liquid crystal elastomers

Helical structure of cholesteric liquid crystals (CLC) creates a photonic crystal which can serve as a distributed cavity providing lasing. Cholesteric liquid crystals elastomers (CLCE) are soft solids with optical properties of low molecular weight CLCs incorporated into a polymer network. The sens...

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Bibliographic Details
Published in:Molecular Crystals and Liquid Crystals 2017-04, Vol.647 (1), p.216-222
Main Authors: Varanytsia, Andrii, Nagai, Hama, Urayama, Kenji, Palffy-Muhoray, Peter
Format: Article
Language:English
Subjects:
cholesteric liquid crystal
cholesteric liquid crystal elastomer
Cholesteric liquid crystals
Compressing
Crystal structure
Crystals
Elastomers
Emissions control
Lasers
Lasing
lasing from cholesteric liquid crystal
Liquid crystal
Liquid crystals
Molecular structure
Molecular weight
Optical properties
Photonic crystals
Solids
Strain
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Description
Summary:Helical structure of cholesteric liquid crystals (CLC) creates a photonic crystal which can serve as a distributed cavity providing lasing. Cholesteric liquid crystals elastomers (CLCE) are soft solids with optical properties of low molecular weight CLCs incorporated into a polymer network. The sensitivity of photonic properties of CLCEs to mechanical strain enables mechanically tunable lasing from CLCE films. This work discusses the accuracy of mechanical tuning of lasing emission wavelength from dye doped CLCE by imposing uniaxial compression strain parallel to the helical axis and highlights technological challenges important for practical applications of these materials.
ISSN:1542-1406
1563-5287
1527-1943
DOI:10.1080/15421406.2017.1289596