ISSN:
1089-7690
Source:
AIP Digital Archive
Topics:
Physics
,
Chemistry and Pharmacology
Notes:
Scattering delay times between photon absorption and emission, and transition rates for continuum resonance Raman scattering are derived in a coherent and detailed fashion, within the time-dependent approach pioneered by Heller, Imre, and others. The resulting expressions for the Raman scattering delay times are related to similar expressions for particle scattering delay times derived by Eisenbud, Wigner, and Smith in terms of S matrices. These expressions are valid both for the ideal cases of sharp photon frequencies, and for realistic cases of finite frequency distributions or laser profiles. The Raman transition rates for this type of resonance scattering have a golden-rule-type expression implying the familiar selection rules and symmetry of two-photon transitions, similar to the Fermi–Pauli golden rule for single photon transitions. Applications to 79Br2 yield ultrashort Raman scattering delay times in the 10 fs domain.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.462688
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