Relaxation kinetics of photoinduced surface relief grating on azopolymer films

Matsui, Tatsunosuke; Yamamoto, Shin-ichiro; Ozaki, Masanori; Yoshino, Katsumi; Kajzar, Francois

doi:https://doi.org/10.1063/1.1516264

Relaxation kinetics of photoinduced surface relief grating on azopolymer films

Matsui, Tatsunosuke; Yamamoto, Shin-ichiro; Ozaki, Masanori et al.

Journal of Applied Physics, 2002, 92(12), 6959-6965

Number of Access:440（2025-09-02 10:22 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/75850

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Title	Relaxation kinetics of photoinduced surface relief grating on azopolymer films
Creator	NRID 1000080452225 1000080452225 CreatorName Matsui, Tatsunosuke
	CreatorName Yamamoto, Shin-ichiro
	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 1000070029205 1000070029205 CreatorName Yoshino, Katsumi
	CreatorName Kajzar, Francois
Description	This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Tatsunosuke Matsui, Shin-ichiro Yamamoto, Masanori Ozaki, Katsumi Yoshino, and Francois Kajzar, Journal of Applied Physics 92, 6959 (2002) and may be found at https://doi.org/10.1063/1.1516264.
Abstract	The relaxation kinetics of the photoinduced surface relief grating (SRG) formed on an azopolymer film after stopping laser beam writing has been systematically investigated. In addition to a photoinduced increase of the diffraction efficiency in the SRG, an anomalous further enhancement of the efficiency was observed even without light irradiation, after the recording light beam was switched off. This anomalous relaxation process consists of two components with short and long relaxation times, and strongly depends on the temperature and polarization of the probe beam used for the diffraction measurement. At lower temperatures the anomalous growth is more effective and the fast component is dominant. From the results of the polarization dependence of the diffraction efficiency and optical absorption, it has been manifested that the fast component of the relaxation originates from the cis-trans thermal isomerization of azobenzene in the side chain. The origin of the slow decay is also discussed in terms of the order parameter change of the azomolecules caused by the reorientational relaxation.
Publisher	American Institute of Physics
Source Title	Journal of Applied Physics
Volume (Issue)	92(12)
Page	6959-6965
Date of Issued	2002-11-27
Language	English
Handle URL	https://hdl.handle.net/11094/75850
PISSN	00218979
eISSN	10897550
NCID	AA00693547
Relation.isIdenticalTo	DOI (Publisher Version) https://doi.org/10.1063/1.1516264
Access Rights	open access
oaire:version	Version of Record
Category	学術雑誌論文 Journal Article

Resource Type	journal article
Local Type	Journal Article
DCMI Type	Text
DCTERMS.bibliographicCitation	Journal of Applied Physics. 2002, 92(12), p. 6959-6965
DC.title	Relaxation kinetics of photoinduced surface relief grating on azopolymer films
DC.creator	Matsui, Tatsunosuke
	Yamamoto, Shin-ichiro
	Ozaki, Masanori
	Yoshino, Katsumi
	Kajzar, Francois
DC.publisher	American Institute of Physics
DC.language' scheme='DCTERMS.RFC1766	English
DC.type' scheme='DCTERMS.DCMIType	Text
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2002-11-27
DC.identifier	https://doi.org/10.1063/1.1516264
DC.description	This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Tatsunosuke Matsui, Shin-ichiro Yamamoto, Masanori Ozaki, Katsumi Yoshino, and Francois Kajzar, Journal of Applied Physics 92, 6959 (2002) and may be found at https://doi.org/10.1063/1.1516264.
DCTERMS.abstract	The relaxation kinetics of the photoinduced surface relief grating (SRG) formed on an azopolymer film after stopping laser beam writing has been systematically investigated. In addition to a photoinduced increase of the diffraction efficiency in the SRG, an anomalous further enhancement of the efficiency was observed even without light irradiation, after the recording light beam was switched off. This anomalous relaxation process consists of two components with short and long relaxation times, and strongly depends on the temperature and polarization of the probe beam used for the diffraction measurement. At lower temperatures the anomalous growth is more effective and the fast component is dominant. From the results of the polarization dependence of the diffraction efficiency and optical absorption, it has been manifested that the fast component of the relaxation originates from the cis-trans thermal isomerization of azobenzene in the side chain. The origin of the slow decay is also discussed in terms of the order parameter change of the azomolecules caused by the reorientational relaxation.
DC.format	75850
citation_title	Relaxation kinetics of photoinduced surface relief grating on azopolymer films
citation_author	Matsui, Tatsunosuke
	Yamamoto, Shin-ichiro
	Ozaki, Masanori
	Yoshino, Katsumi
	Kajzar, Francois
citation_publisher	American Institute of Physics
citation_language	English
citation_date	2002-11-27
citation_journal_title	Journal of Applied Physics
citation_volume	92
citation_issue	12
citation_firstpage	6959
citation_lastpage	6965
citation_doi	https://doi.org/10.1063/1.1516264
citation_public_url	https://hdl.handle.net/11094/75850

Relaxation kinetics of photoinduced surface relief grating on azopolymer films

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