Open AccessLow threshold lasing from dye-doped cholesteric liquid crystal multi-layered structures
Author(s) -
Yoichi Takanishi,
Youko Ohtsuka,
Goro Suzaki,
Suzushi Nishimura,
Hideo Takezoe
Publication year - 2010
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.18.012909
Subject(s) - lasing threshold , materials science , cholesteric liquid crystal , liquid crystal , doping , photonic crystal , dye laser , optics , optoelectronics , crystal (programming language) , laser , wavelength , physics , computer science , programming language
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.