Artículo
Strong external field effects on electronic dephasing of molecular transitions in condensed media
Autor/es | Morillo Buzón, Manuel
Cukier, Robert I. |
Departamento | Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear |
Fecha de publicación | 1999 |
Fecha de depósito | 2020-04-29 |
Publicado en |
|
Resumen | We discuss the effects of a strong external field on the optical transition between two electronic
states of a solute immersed in a medium. The solute states may be weakly or quite strongly coupled
to the medium. The ... We discuss the effects of a strong external field on the optical transition between two electronic states of a solute immersed in a medium. The solute states may be weakly or quite strongly coupled to the medium. The electronic dephasing process is characterized via the power absorbed by the solute. The average absorbed power P¯(t) for resonant, strong fields exhibits an oscillatory decay in time, reflecting the finite change in the population difference of the electronic states, and the dephasing arising from the coupling to the medium. The coefficients of P¯(t) depend on the detuning from resonance as well as the coupling strength between the external field and the solute’s transition dipole. Our method is nonperturbative in the external field strength and shows that the spectral line shapes can be systematically altered by the application of a strong external field. We also show that for strong but off-resonance fields, P¯(t) returns to the linear response regime. |
Agencias financiadoras | Center for Fundamental Materials Research at Michigan State University. EE.UU. Dirección General de Enseñanza Superior (DGES). España Junta de Andalucía |
Identificador del proyecto | PB95-0536 |
Cita | Morillo Buzón, M. y Cukier, R.I. (1999). Strong external field effects on electronic dephasing of molecular transitions in condensed media. The Journal of Chemical Physics, 110 (16), 7966-7976. |
Ficheros | Tamaño | Formato | Ver | Descripción |
---|---|---|---|---|
1.478671.pdf | 511.5Kb | [PDF] | Ver/ | |