Modeling of ultrafast time-resolved fluorescence applied to a weakly coupled chromophore pair.

@article{Balevicius2015ModelingOU,
  title={Modeling of ultrafast time-resolved fluorescence applied to a weakly coupled chromophore pair.},
  author={Vytautas Balevicius and Leonas Valkunas and Darius Abramavicius},
  journal={The Journal of chemical physics},
  year={2015},
  volume={143 7},
  pages={074101}
}
We present theory for calculating the third-order non-linear response function of a molecular aggregate in the weak inter-chromophore coupling regime. This approach is based on the perturbative expansion of the system evolution with respect to the resonance coupling, while the system-bath interaction is treated non-perturbatively by means of cumulant expansion. An explicit expression for the time-resolved fluorescence signal is then obtained. This allows us to investigate the ultrafast time… CONTINUE READING