Femtosecond optical Kerr-gate measurement of fluorescence spectra of dye solutions

被引:25
作者
Kanematsu, Y [1 ]
Ozawa, H
Tanaka, I
Kinoshita, S
机构
[1] Osaka Univ, Grad Sch Sci, Dept Phys, Toyonaka, Osaka 5600043, Japan
[2] Wakayama Univ, Fac Syst Engn, Dept Chem & Mat Sci, Wakayama 6408510, Japan
关键词
ultrafast spectroscopy; fluorescence; optical Kerr effect;
D O I
10.1016/S0022-2313(99)00472-X
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Utilizing the ultrafast electronic response of Kerr effect of glass material as an optical gate, we have constructed a system for the time-resolved fluorescence measurement in the 100-fs time region. We have demonstrated that the ultrafast Kerr-gate technique combined with multi-channel spectral detection enables us to the direct measurement of the spectral shape. Because of highly efficient gating and simultaneous acquisition of all the spectral components, the time-resolved fluorescence spectra of high S/N ratio have been obtained for several dye solutions. Although wavelength-dependent time delay of the system is found to remain, direct recognition of the dynamic Stokes shift in the S-2 --> S-0 fluorescence of malachite green in ethanol has been made by comparing the obtained time-resolved spectra with those of the ultrafast fluorescence of beta-carotene in hexane. (C) 2000 Published by Elsevier Science B.V. All rights reserved.
引用
收藏
页码:917 / 919
页数:3
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