共 35 条
Non-perturbative calculation of 2D spectra in heterogeneous systems:: Exciton relaxation in the FMO complex
被引:57
作者:

Bruggemann, Ben
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Lund Univ, Dept Chem Phys, S-22100 Lund, Sweden Lund Univ, Dept Chem Phys, S-22100 Lund, Sweden

Kjellberg, Par
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Lund Univ, Dept Chem Phys, S-22100 Lund, Sweden Lund Univ, Dept Chem Phys, S-22100 Lund, Sweden

Pullerits, Tonu
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Lund Univ, Dept Chem Phys, S-22100 Lund, Sweden Lund Univ, Dept Chem Phys, S-22100 Lund, Sweden
机构:
[1] Lund Univ, Dept Chem Phys, S-22100 Lund, Sweden
关键词:
D O I:
10.1016/j.cplett.2007.07.002
中图分类号:
O64 [物理化学(理论化学)、化学物理学];
学科分类号:
070304 ;
081704 ;
摘要:
Experimental 2D frequency resolved spectra showing the relaxation of excitons in the photosynthetic antenna system FMO are reproduced by a multi-exciton density matrix approach explicitly including the external fields. The interference of the polarizations of a number of randomly placed, rotated and energetically inhomogencous complexes is used to extract the signal in the phase matching directions. It is shown that varying the laser intensity has only a minor impact, but changing the phase within the single pulses makes higher order contributions possible which lead to a fundamental change of the 2D spectra. (C) 2007 Elsevier B.V. All rights reserved.
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页码:192 / 196
页数:5
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