Journal Highlight: Femtosecond stimulated Raman spectroscopy

Femtosecond stimulated Raman spectroscopy

Laser & Photonics Reviews, 2011, 5, 102-113
R.R. Frontiera, R.A. Mathies

Abstract: Advances in the field of Femtosecond Stimulated Raman Spectroscopy (FSRS), a new time-resolved structural technique that provides complete vibrational spectra on the ultrafast timescale, are reviewed. When coupled with a femtosecond optical trigger, the time evolution of a reacting species can be monitored with unprecedented <25 femtosecond temporal and 5 cm^-1 spectral resolution. New technological and theoretical advances including the development of tunable FSRS and a background-free FSRS format are discussed. The most recent experimental studies focus on ultrafast reaction dynamics in electronically excited states: isomerization in cyanobacterial phytochrome, ultrafast spin flipping in a solar cell sensitizer, and excited state proton transfer in green fluorescent protein. The use of FSRS to directly map multidimensional reactive potential energy surfaces and to probe the mechanism of reactive internal conversion is prospectively discussed.

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