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Issue 29, 2013
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Broadband infrared and Raman probes of excited-state vibrational molecular dynamics: simulation protocols based on loop diagrams

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Abstract

Vibrational motions in electronically excited states can be observed either by time and frequency resolved infrared absorption or by off resonant stimulated Raman techniques. Multipoint correlation function expressions are derived for both signals. Three representations which suggest different simulation protocols for the signals are developed. These are based on the forward and the backward propagation of the wavefunction, sum over state expansion using an effective vibrational Hamiltonian or a semiclassical treatment of a bath. We show that the effective temporal (Δt) and spectral (Δω) resolution of the techniques is not controlled solely by experimental knobs but also depends on the system dynamics being probed. The Fourier uncertainty ΔωΔt > 1 is never violated.

Graphical abstract: Broadband infrared and Raman probes of excited-state vibrational molecular dynamics: simulation protocols based on loop diagrams

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Publication details

The article was received on 14 Mar 2013, accepted on 29 May 2013 and first published on 29 May 2013


Article type: Paper
DOI: 10.1039/C3CP51117K
Citation: Phys. Chem. Chem. Phys., 2013,15, 12348-12359
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    Broadband infrared and Raman probes of excited-state vibrational molecular dynamics: simulation protocols based on loop diagrams

    K. E. Dorfman, B. P. Fingerhut and S. Mukamel, Phys. Chem. Chem. Phys., 2013, 15, 12348
    DOI: 10.1039/C3CP51117K

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