Abbreviated Journal Title
Opt. Express
Keywords
EMISSION; Optics
Abstract
Low threshold laser action of dye-doped cholesteric liquid crystals ( CLCs) is demonstrated using an input circularly polarized light whose handedness is the same as the cholesteric helix of the sample at the high-energy band edge of the reflection band. The mechanism originates from the dramatic increase of the photon density of state at the band edges. We also demonstrate an enhanced laser action of a CLC in a dielectric multilayer cavity. In such a device configuration, the band-edge excitation at high-energy band edge improves the lasing performance not only for the same handedness circularly polarized pump beam as the cholesteric helix but also for the opposite one. It stems from the polarization independence of the dielectric multilayers.
Journal Title
Optics Express
Volume
15
Issue/Number
2
Publication Date
1-1-2007
Document Type
Article
Language
English
First Page
616
Last Page
622
WOS Identifier
ISSN
1094-4087
Recommended Citation
Matsuhisa, Yuko; Huang, Yuhua; Zhou, Ying; Wu, Shin-Tson; Takao, Yuuki; Fujii, Akihiko; and Ozaki, Masanori, "Cholesteric liquid crystal laser in a dielectric mirror cavity upon band-edge excitation" (2007). Faculty Bibliography 2000s. 7413.
https://stars.library.ucf.edu/facultybib2000/7413
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