Laser actions in nano-helical-structured liquid crystals

Ozaki, Masanori; Ozaki, Ryotaro; Matsui, Tatsunosuke et al.

Proceedings of SPIE - The International Society for Optical Engineering, 2004, 5518, 44-50

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Identifier to cite or link to this item: https://hdl.handle.net/11094/76950

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Title
Laser actions in nano-helical-structured liquid crystals
Creator
NRID
1000050204186 1000050204186
ORCID
0000-0002-9556-4225 0000-0002-9556-4225
researchmap permalink
read0014092 read0014092
Scopus Author ID
55490143900 55490143900
CreatorName
Ozaki, Masanori
NRID
1000090535361 1000090535361
CreatorName
Ozaki, Ryotaro
NRID
1000080452225 1000080452225
CreatorName
Matsui, Tatsunosuke
NRID
1000070029205 1000070029205
CreatorName
Yoshino, Katsumi
Subject
Photonic crystal
Liquid crystal
Laser action
Helical structure
Cholesteric liquid crystal
defect mode
Description
Optical Science and Technology, the SPIE 49th Annual Meeting, 2004, Denver, Colorado, United States
Masanori Ozaki, Ryotaro Ozaki, Tatsunosuke Matsui D.D.S., and Katsumi Yoshino "Laser actions in nano-helical-structured liquid crystals", Proc. SPIE 5518, Liquid Crystals VIII, (15 October 2004). DOI: https://doi.org/10.1117/12.555543
Abstract
Optically pumped laser action has been observed at the edge wavelength of the stop band in a dye-doped flexible freestanding film of photopolymerized cholesteric liquid crystal (PCLC), which originates from band edge effect of the one-dimensional photonic band gap. On the other hand, defect mode laser action has also been experimentally demonstrated at the defect mode wavelength within the band gap. This laser action is based on the photon localization at the twist defect of the composite film consisting of two PCLC layers. Twist defect mode (TDM) is induced by the introduction of twist defect which is a discontinuity of the director rotation around the helix axis at an interface of two PCLC layers. We also propose a new type of tunable defect mode based on the chiral defect in which the partial modulation of the helix pitch is introduced.
Publisher
SPIE
Source Title
Proceedings of SPIE - The International Society for Optical Engineering
Volume (Issue)
5518
Page
44-50
Date of Issued
2004-10-15
Language
English
Handle URL
https://hdl.handle.net/11094/76950
PISSN
0277786X
NCID
AA10619755
Relation.isIdenticalTo
DOI (Publisher Version)
https://doi.org/10.1117/12.555543
Access Rights
open access
oaire:version
Version of Record
Category
会議発表論文 Conference Paper