Low-threshold and high efficiency lasing upon band-edge excitation in a cholesteric liquid crystal
Low-threshold and high efficiency lasing upon band-edge excitation in a cholesteric liquid crystal
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DOI：
10.1063/1.2710777
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发表时间：
2007-02-26
影响因子：
4
通讯作者：
Ozaki, Masanori
中科院分区：
文献类型：
--
作者：
Matsuhisa, Yuko;Huang, Yuhua;Ozaki, Masanori
使用具有与反射带较短波长带边缘的样品螺旋结构相同的旋向圆偏振的输入激发，演示了基于染料掺杂胆甾型液晶（CLC）的低阈值和高效率激光器。其机制源于能带边缘光态密度（DOS）的急剧增加。 CLC系统计算的DOS证实了作者的实验结果。(c) 2007年美国物理研究所。
A low threshold and high efficiency laser based on dye-doped cholesteric liquid crystals (CLCs) is demonstrated using an input excitation with the same handedness of circular polarization as the helical structure of the sample at the shorter wavelength band edge of the reflection band. The responsible mechanism originates from the dramatic increase of the optical density of state (DOS) at the band edges. The calculated DOS of the CLC system confirms the authors' experimental results.(c) 2007 American Institute of Physics.