Solvent randomness and intramolecular considerations of optical responses in four-wave mixing

J. L. Paz, Patricio Espinoza-Montero, Marcos Loroño, Lenin A. González-Paz, Edgar Marquez, Joan Vera-Villalobos, José R. Mora, Ysaias J. Alvarado

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We determined the optical profiles of a molecular system coupled with a thermal bath in presence of intramolecular coupling. Solvent effects were explicitly considered as a random variable by modelling the non-radiative interaction with the solute. Optical susceptibilities of stochastic origin were solved through cumulant expansions in Gaussian distributions considering a white noise as a correlation function. We examined the behaviour of these properties for the solvent noise parameter and intramolecular coupling parameters. Our results show that the intensity of the nonlinear optical properties decreases with the insertion of either of the two effects considered. Finally, other considerations related to the determination of relaxation times from the symmetry properties of the optical responses in frequency space are presented.

Original languageEnglish
Pages (from-to)1083-1093
Number of pages11
JournalJournal of Modern Optics
Issue number20
StatePublished - 2021
Externally publishedYes

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  • Cumulant expansions
  • intramolecular
  • optical responses
  • vibronic


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