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Broadband Cavity‐Mode Lasing from Dye‐Doped Nematic Liquid Crystals Sandwiched by Broadband Cholesteric Liquid Crystal Bragg Reflectors
Author(s) -
Choi Hyunhee,
Kim Junghee,
Nishimura Suzushi,
Toyooka Takehiro,
Araoka Fumito,
Ishikawa Ken,
Wu Jeong Weon,
Takezoe Hideo
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.200904110
Subject(s) - materials science , liquid crystal , lasing threshold , cholesteric liquid crystal , broadband , optics , optoelectronics , doping , bragg's law , diffraction , wavelength , physics
Multiple polymer cholesteric liquid crystal (PCLC) layers with different pitches and a sandwich structure of nematic liquid crystal by these PCLC films are presented. The former serves as broadband‐distributed Bragg reflectors and the latter as multiple‐band electrotunable filters. Using the latter dye‐doped hybrid film red–green–blue simultaneous lasing due to Fabry–Perot cavity modes is achieved (see figure).