Relaxation kinetics of photoinduced surface relief grating on azopolymer films

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

doi:info:doi/10.1063/1.1516264

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タイトル	Relaxation kinetics of photoinduced surface relief grating on azopolymer films
著者	Matsui, Tatsunosuke Matsui, Tatsunosuke
	Yamamoto, Shin-ichiro Yamamoto, Shin-ichiro
	Ozaki, Masanori Ozaki, Masanori
	Yoshino, Katsumi Yoshino, Katsumi
	Kajzar, Francois Kajzar, Francois
内容	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.
抄録	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.
公開者	American Institute of Physics
掲載誌名	Journal of Applied Physics
巻	92
号	12
開始ページ	6959
終了ページ	6965
刊行年月	2002-11-27
ISSN	00218979
ISSN	10897550
NCID	AA00693547
DOI (出版社版)	info:doi/10.1063/1.1516264
URL	http://hdl.handle.net/11094/75850
言語	英語
カテゴリ	学術雑誌論文 Journal Article

著者版フラグ	publisher
NII資源タイプ	学術雑誌論文
ローカル資源タイプ	学術雑誌論文
dcmi資源タイプ	text
DCTERMS.bibliographicCitation	Journal of Applied Physics.92(12) P.6959-P.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	英語
DCTERMS.issued" scheme="DCTERMS.W3CDTF	2002-11-27
DC.identifier	info:doi/10.1063/1.1516264
DC.identifier" scheme="DCTERMS.URI	http://hdl.handle.net/11094/75850
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.
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	英語
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_issn	00218979
citation_issn	10897550
citation_doi	info:doi/10.1063/1.1516264
citation_public_url	http://hdl.handle.net/11094/75850

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