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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
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
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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
10897550
citation_doi
info:doi/10.1063/1.1516264
citation_public_url
http://hdl.handle.net/11094/75850