Polarized Fluorescence in Indole under Two-Photon Excitation by Femtosecond Laser Pulses
- 作者: Sasin M.E.1, Tushkanov V.I.1,2, Smolin A.G.1, Shternin P.S.1, Vasyutinskii O.S.1
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隶属关系:
- Ioffe Institute, Russian Academy of Sciences
- St. Petersburg Academic University
- 期: 卷 63, 编号 9 (2018)
- 页面: 1293-1299
- 栏目: Physical Approaches and Problems of Data Interpretation in the Life Sciences
- URL: https://journal-vniispk.ru/1063-7842/article/view/201925
- DOI: https://doi.org/10.1134/S1063784218090189
- ID: 201925
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详细
We have analyzed the decay of fluorescence intensity in indole dissolved in propylene glycol under two-photon excitation by linearly and circularly polarized femtosecond laser pulses in the wavelength range 475–510 nm. The dependences of fluorescence intensity I0, anisotropy r, and parameter Ω on the excitation energy have been determined and analyzed. In particular, a nonmonotonic behavior of I0 indicating the increase of indole excited state density in the excitation energy range above 5.1 eV and the anisotropy sign reversal due to the variation of the symmetry of indole vibronic states have been observed and interpreted theoretically.
作者简介
M. Sasin
Ioffe Institute, Russian Academy of Sciences
编辑信件的主要联系方式.
Email: sasin@ffm.ioffe.ru
俄罗斯联邦, St. Petersburg, 194021
V. Tushkanov
Ioffe Institute, Russian Academy of Sciences; St. Petersburg Academic University
Email: sasin@ffm.ioffe.ru
俄罗斯联邦, St. Petersburg, 194021; St. Petersburg, 194021
A. Smolin
Ioffe Institute, Russian Academy of Sciences
Email: sasin@ffm.ioffe.ru
俄罗斯联邦, St. Petersburg, 194021
P. Shternin
Ioffe Institute, Russian Academy of Sciences
Email: sasin@ffm.ioffe.ru
俄罗斯联邦, St. Petersburg, 194021
O. Vasyutinskii
Ioffe Institute, Russian Academy of Sciences
Email: sasin@ffm.ioffe.ru
俄罗斯联邦, St. Petersburg, 194021
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