Impulsive stimulated Raman scattering ISRS

Fig. 2.2. Two generation models of coherent optical phonons, (a), (c), (e) impulsive stimulated Raman scattering (ISRS). (b), (d), (f) displacive excitation of coherent phonons (DECP). Graphs (e) and (f) display the time evolution of the driving force (grey areas) and that of the displacement (solid, curves) for ISRS and DECP, respectively...

D. M. Neumark We are interested in generating coherent vibrational motion in negative ions, which typically do not have bound excited electronic states. Does your Impulsive Stimulated Raman Scattering (ISRS) scheme work if the excited state is not bound ... 

Impulsive stimulated Raman scattering (ISRS) Impulsive stimulated Raman scattering (ISRS) is the creation of coherent ground-state nuclear motion through an impulsive force caused by the interaction of a Raman-active medium with an ultrashort light pulse. 

Impulsive stimulated Raman scattering (ISRS) signal shows oscillations at twice the vibrational frequency and decay at twice the vibrational dephasing rate. 

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