Journal
CHEMICAL PHYSICS
Volume 357, Issue 1-3, Pages 79-84Publisher
ELSEVIER
DOI: 10.1016/j.chemphys.2008.10.010
Keywords
Excitons; Femtosecond spectroscopy; Photosynthetic aggregates
Funding
- NIGMS NIH HHS [R01 GM059230, R01 GM059230-03] Funding Source: Medline
- Direct For Mathematical & Physical Scien
- Division Of Chemistry [0745892] Funding Source: National Science Foundation
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Signatures of strong J and weak K exciton couplings in the nonlinear femtosecond optical response of the FMO photosynthetic complex are identified. The two types of couplings originate from interactions of molecular transition charge dipoles and change of molecular permanent dipoles in their ground and excited states, respectively. We demonstrate that by combining various two-dimensional optical signals it should be possible to invert spectroscopic data to reconstruct the full exciton Hamiltonian (energies and couplings). (C) 2008 Elsevier B.V. All rights reserved.
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