Manipulating impulsive stimulated raman spectroscopy with a chirped probe pulse.
Monacelli L., Batignani G., Fumero G., Ferrante C., Mukamel S., Scopigno T.
II - Fisica della materia
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During photophysical and photochemical processes, dissecting the vibrational signals from different electronic states is a challenge. In this work, the mode-specific impulsive stimulated Raman spectroscopy response for different spectral components of broadband probe is modeled by a quantum-mechanical treatment of the process. We demonstrate how to manipulate the signal by varying the probe chirp, thereby affecting the relative phase between the various contributions to the signal. This novel control knob allows to selectively enhance desired vibrational features and discern the spectral components arising from different excited states.