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Proceedings Paper

Lasing in photonic crystals based on dye-doped liquid crystal films (Invited Paper)
Author(s): Tsung-Hsien Lin; Yi-Jan Chen; Chun-Hui Wu; J.-H. Liu; P.-C. Yang; Andy Yung-Guey Fuh
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Paper Abstract

This letter examines a planar cholesteric cell (CLC) doped with a collocation of two laser dyes as a one-dimensional photonic crystal. Adding the photo-tunable chiral material-AzoB allows the CLC photonic crystal can be lased at the band edges of the photonic band gap with a tuning range of over 100nm. Tuning is performed by irradiating the chiral AzoB material with UV light so that it undergoes trans-cis isomerization in the CLC film. The tuning range is the visible region from 563nm to 667nm. Moreover, the tuning is reversible.

Paper Details

Date Published: 12 April 2005
PDF: 7 pages
Proc. SPIE 5741, Emerging Liquid Crystal Technologies, (12 April 2005); doi: 10.1117/12.584819
Show Author Affiliations
Tsung-Hsien Lin, National Cheng Kung Univ. (Taiwan)
Yi-Jan Chen, National Cheng Kung Univ. (Taiwan)
Chun-Hui Wu, National Cheng Kung Univ. (Taiwan)
J.-H. Liu, National Cheng Kung Univ. (Taiwan)
P.-C. Yang, National Cheng Kung Univ. (Taiwan)
Andy Yung-Guey Fuh, National Cheng Kung Univ. (Taiwan)


Published in SPIE Proceedings Vol. 5741:
Emerging Liquid Crystal Technologies
Liang-Chy Chien, Editor(s)

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