title: Low threshold lasing from dye-doped cholesteric liquid crystal multi-layered structures.
abstract: We fabricated novel hybrid structures composed of a dye-doped low-molecular-weight cholesteric liquid crystal sandwiched by multi-layered polymer cholesteric liquid crystal films and evaluated their lasing characteristics. Lasing was observed with an extremely reduced threshold (12 nJ/pulse) by a factor of 10 compared with that in a simple dye-doped low-molecular-weight cholesteric liquid crystal cell. Lasing characteristics experimentally obtained were discussed by comparing them with the simulated photonic density of states spectra.
authors.affiliation: Department of Physics, Kyoto University, Kitashirakawaoiwake, Sakyo, Kyoto 606-8502, Japan. ytakanis@scphys.kyoto-u.ac.jp
authors.forename: Yoichi
authors.initials: Y
authors.lastname: Takanishi
authors.forename: Youko
authors.initials: Y
authors.lastname: Ohtsuka
authors.forename: Goro
authors.initials: G
authors.lastname: Suzaki
authors.forename: Suzushi
authors.initials: S
authors.lastname: Nishimura
authors.forename: Hideo
authors.initials: H
authors.lastname: Takezoe