Accessing Excited State Molecular Vibrations by Femtosecond Stimulated Raman Spectroscopy.

ABSTRACT: Excited state vibrations are crucial for determining the photophysical and photochemical properties of molecular compounds. Stimulated Raman scattering can coherently stimulate and probe molecular vibrations with optical pulses, but it is generally restricted to ground state properties. Working under resonance conditions enables cross-section enhancement and selective excitation to a targeted electronic level but is hampered by an increased signal complexity due to the presence of overlapping spectral contributions. Here, we show how detailed information about ground and excited state vibrations can be disentangled by exploiting the relative time delay between Raman and probe pulses to control the excited state population, combined with a diagrammatic formalism to dissect the pathways conc

SUBMITTER: Batignani G 

PROVIDER: S-EPMC7735730 | biostudies-literature | 2020 Sep

REPOSITORIES: biostudies-literature