Dynamics of the time-resolved stimulated Raman scattering spectrum in presence of transient vibronic inversion of population on the example of optically excited trans-ß-apo-8'-carotenal.
J Chem Phys
; 140(20): 204312, 2014 May 28.
Article
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| MEDLINE
| ID: mdl-24880285
ABSTRACT
We have studied the effect of transient vibrational inversion of population in trans-ß-apo-8(')-carotenal on the time-resolved femtosecond stimulated Raman scattering (TR-FSRS) signal. The experimental data are interpreted by applying a quantum mechanical approach, using the formalism of projection operators for constructing the theoretical model of TR-FSRS. Within this theoretical frame we explain the presence of transient Raman losses on the Stokes side of the TR-FSRS spectrum as the effect of vibrational inversion of population. In view of the obtained experimental and theoretical results, we conclude that the excited S2 electronic level of trans-ß-apo-8(')-carotenal relaxes towards the S0 ground state through a set of four vibrational sublevels of S1 state.
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1
Colección:
01-internacional
Banco de datos:
MEDLINE
Idioma:
En
Revista:
J Chem Phys
Año:
2014
Tipo del documento:
Article
País de afiliación:
Polonia