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Glass‐Forming Cholesteric Liquid Crystal Oligomers for New Tunable Solid‐State Laser
Author(s) -
Furumi Seiichi,
Tamaoki Nobuyuki
Publication year - 2010
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/adma.200902552
Subject(s) - materials science , supercooling , laser , cholesteric liquid crystal , annealing (glass) , fabrication , solid state , optoelectronics , liquid crystal , photonics , nanotechnology , optics , engineering physics , composite material , thermodynamics , medicine , physics , alternative medicine , pathology , engineering
A new potential utility of glass‐forming cholesteric liquid crystal (G‐CLC) oligomers for application in tunable solid‐state laser is presented. The G‐CLC is capable of tuning the photonic band gaps (PBGs) by way of the annealing temperature and preserving the tuned PBGs by a subsequent supercooling treatment. This G‐CLC film enables the facile fabrication of a continuously gradated PGB structure and, thus, the continuous tuning of a single laser‐emission peak (see figure).