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Proceedings Paper

Lasing characteristics of a dye-doped nematic liquid crystal layer sandwiched by two polymeric cholesteric liquid crystals
Author(s): Myoung Hoon Song; Byoungchoo Park; Ki-Chul Shin; Takashi Ohta; Yuko Tsunoda; Hajime Hoshi; Yoichi Takanishi; Ken Ishikawa; Junji Watanabe; Suzushi Nishimura; Takehiro Toyooka; Zhengguo Zhu; Timothy M. Swager; Hideo Takezoe
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Paper Abstract

We have studied the lasing characteristics from a dye-doped nematic layer sandwiched by two polymeric cholesteric liquid crystal (PCLC) films as photonic band gap materials. The nematic layer possessing birefringence brings about the following remarkable optical characteristics; (1) reflectance in the photonic band gap (PBG) region exceeds 50% due to the retardation effect, being unpredictable from a single CLC film, (2) efficient lasing occurs either at the notch of PBG or at the photonic band edge, (3) the lasing emisions contain both right- and left-circular polarizations, and (4) tunable lasing can be achieved by the reorientation of nematic liquid crystal molecule under the application of an electric field.

Paper Details

Date Published: 15 October 2004
PDF: 11 pages
Proc. SPIE 5518, Liquid Crystals VIII, (15 October 2004); doi: 10.1117/12.562626
Show Author Affiliations
Myoung Hoon Song, Tokyo Institute of Technology (Japan)
Byoungchoo Park, Tokyo Institute of Technology (Japan)
Ki-Chul Shin, Tokyo Institute of Technology (Japan)
Takashi Ohta, Tokyo Institute of Technology (Japan)
Yuko Tsunoda, Tokyo Institute of Technology (Japan)
Hajime Hoshi, Tokyo Institute of Technology (Japan)
Yoichi Takanishi, Tokyo Institute of Technology (Japan)
Ken Ishikawa, Tokyo Institute of Technology (Japan)
Junji Watanabe, Tokyo Institute of Technology (Japan)
Suzushi Nishimura, Nippon Oil Corp. (Japan)
Takehiro Toyooka, Nippon Oil Corp. (Japan)
Zhengguo Zhu, Massachusetts Institute of Technology (United States)
Timothy M. Swager, Massachusetts Institute of Technology (United States)
Hideo Takezoe, Tokyo Institute of Technology (Japan)


Published in SPIE Proceedings Vol. 5518:
Liquid Crystals VIII
Iam-Choon Khoo, Editor(s)

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