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Development of Laser Dyes to Realize Low Threshold in Dye‐Doped Cholesteric Liquid Crystal Lasers
Author(s) -
Uchimura Makoto,
Watanabe Yo,
Araoka Fumito,
Watanabe Junji,
Takezoe Hideo,
Konishi Genichi
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.201001046
Subject(s) - cholesteric liquid crystal , materials science , anthracene , pyrene , laser , dye laser , liquid crystal , doping , luminescence , optoelectronics , solubility , optics , photochemistry , organic chemistry , chemistry , physics
Highly efficient luminescence dyes based on pyrene and anthracene derivatives (see figure) are synthesized for liquid crystal dye lasers. The threshold value of one of the pyrene derivatives is as low as 1/20 that of the commonly used DCM in cholesteric liquid crystal (CLC) distributed feedback lasers. Good optical properties such as luminous efficiency and solubility in CLCs are important factors for realizing a low threshold.