4.8 Article

Broadband Cavity-Mode Lasing from Dye-Doped Nematic Liquid Crystals Sandwiched by Broadband Cholesteric Liquid Crystal Bragg Reflectors

Journal

ADVANCED MATERIALS
Volume 22, Issue 24, Pages 2680-+

Publisher

WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.200904110

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Funding

  1. Quantum Metamaterials Research Center (Republic of Korea)
  2. Korean Government [KRF-2008-357- C00044]

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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).

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