Laser actions in nano-helical-structured liquid crystals

Ozaki, Masanori; Ozaki, Ryotaro; Matsui, Tatsunosuke; Yoshino, Katsumi

doi:https://doi.org/10.1117/12.555543

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

Number of Access:382（2025-11-01 18:56 Counts）

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
Description	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

Resource Type	conference paper
Local Type	Conference Paper
DCMI Type	Text
DCTERMS.bibliographicCitation	Proceedings of SPIE - The International Society for Optical Engineering. 2004, 5518, p. 44-50
DC.title	Laser actions in nano-helical-structured liquid crystals
DC.creator	Ozaki, Masanori
	Ozaki, Ryotaro
	Matsui, Tatsunosuke
	Yoshino, Katsumi
DC.publisher	SPIE
DC.language' scheme='DCTERMS.RFC1766	English
DC.type' scheme='DCTERMS.DCMIType	Text
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2004-10-15
DC.identifier	https://doi.org/10.1117/12.555543
DC.subject	Photonic crystal
	Liquid crystal
	Laser action
	Helical structure
	Cholesteric liquid crystal
	defect mode
DC.description	Optical Science and Technology, the SPIE 49th Annual Meeting, 2004, Denver, Colorado, United States
DC.description	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
DCTERMS.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.
DC.format	76950
citation_title	Laser actions in nano-helical-structured liquid crystals
citation_author	Ozaki, Masanori
	Ozaki, Ryotaro
	Matsui, Tatsunosuke
	Yoshino, Katsumi
citation_publisher	SPIE
citation_language	English
citation_date	2004-10-15
citation_journal_title	Proceedings of SPIE - The International Society for Optical Engineering
citation_volume	5518
citation_firstpage	44
citation_lastpage	50
citation_doi	https://doi.org/10.1117/12.555543
citation_public_url	https://hdl.handle.net/11094/76950

Laser actions in nano-helical-structured liquid crystals

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