Spatially tunable laser emission in dye-doped cholesteric polymer films

被引：32
作者：
Huang, Yuhua [1 ]
Chen, Liang-Pin [1 ]
Doyle, Charlie [1 ]
Zhou, Ying [1 ]
Wu, Shin-Tson [1 ]
机构：
[1] Univ Cent Florida, Coll Opt & Photon, Orlando, FL 32816 USA
来源：
APPLIED PHYSICS LETTERS | 2006年 / 89卷 / 11期
关键词：
D O I：
10.1063/1.2349826
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
A spatially tunable laser emission of the dye-doped cholesteric polymer film is demonstrated by generating a one-dimensional gradient photonic band gap which is cured by an ultraviolet light. A frequency-doubled pulsed Nd:YAG laser is used to pump the film. The lasing wavelength is tunable from 595 to 643 nm by shifting the position of the film with respect to the pumping beam. Since the spatial distribution of the reflection band is fixed in the cholesteric polymer film, the tuning of the laser wavelength does not require any external field. Therefore, the film is portable and has many applications. (c) 2006 American Institute of Physics.
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页数：3
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