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dc.contributor.authorKobayashi, Takayoshien_US
dc.contributor.authorYabushita, Atsushien_US
dc.date.accessioned2014-12-08T15:43:41Z-
dc.date.available2014-12-08T15:43:41Z-
dc.date.issued2008-05-01en_US
dc.identifier.issn0022-2313en_US
dc.identifier.urihttp://dx.doi.org/10.1016/j.jlumin.2007.11.051en_US
dc.identifier.urihttp://hdl.handle.net/11536/29543-
dc.description.abstractWe have build up non-collinear optical parametric amplifier (NOPA) laser system with adaptive pulse tailoring, which enables to generate sub-4-fs laser pulses. Using the ultrashort laser pulses generated by NOPA, we have performed pump-probe measurement of bacteriorhodopsin (bR) using ultrashort pulses, which can observe real-time frequencies of molecular vibrations. Both of the spectra of pump and probe pulses are nearly the same and cover a spectral range from 500 to 710 nm with a nearly constant phase. The time-gated Fourier transform of the measured absorbance change trace revealed that the frequency of the C = C stretching mode was modulated along with the torsion motion around C-13=C-14 during the photoisomerization of bR. It shows the bond length Of C13=C14 is modulated on the deformation around C-13=C-14 during the photoisomerization. The hydrogen-out-of-plane (HOOP) mode and the in-plane C = C-H bending mode coupled with C-C stretching mode are found to be intermixed with each other in the same period of the torsion motion. It also shows us the real-time conformation change of the molecule, which makes both of the modes indistinguishable. (C) 2007 Elsevier B.V. All rights reserved.en_US
dc.language.isoen_USen_US
dc.subjectultrafasten_US
dc.subjectreal-time spectroscopyen_US
dc.subjectpump-probe spectroscopyen_US
dc.subjectdifference absorption spectrumen_US
dc.titleFs photo-isomerization in bacteriorhodopsin by few-cycle pulsesen_US
dc.typeArticle; Proceedings Paperen_US
dc.identifier.doi10.1016/j.jlumin.2007.11.051en_US
dc.identifier.journalJOURNAL OF LUMINESCENCEen_US
dc.citation.volume128en_US
dc.citation.issue5-6en_US
dc.citation.spage1038en_US
dc.citation.epage1042en_US
dc.contributor.department電子物理學系zh_TW
dc.contributor.departmentDepartment of Electrophysicsen_US
dc.identifier.wosnumberWOS:000255423400104-
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