Laser-induced gratings in nematic/cholesteric mixtures

Laser-induced gratings are produced in thin films of mixtures of nematic and cholesteric liquid crystals doped with a dye. A transient grating regime is found which decays on the order of seconds; additionally, a ‘‘persistent’’ grating with lifetimes up to 16 h has been found. Mechanisms for creatio...

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Bibliographic Details
Published in:Applied physics letters 1987-06, Vol.50 (26), p.1924-1926
Main Authors: ESPINET, H, LESIECKI, M, RAMSBURG, M
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
Other techniques and industries
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Summary:Laser-induced gratings are produced in thin films of mixtures of nematic and cholesteric liquid crystals doped with a dye. A transient grating regime is found which decays on the order of seconds; additionally, a ‘‘persistent’’ grating with lifetimes up to 16 h has been found. Mechanisms for creation and decay are discussed.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.97688