Low threshold lasing from dye-doped cholesteric liquid crystal multi-layered structures.
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.
Takanishi
Yoichi
Y
Department of Physics, Kyoto University, Kitashirakawaoiwake, Sakyo, Kyoto 606-8502, Japan. ytakanis@scphys.kyoto-u.ac.jp
Ohtsuka
Youko
Y
Suzaki
Goro
G
Nishimura
Suzushi
S
Takezoe
Hideo
H