Fourier-Transform Raman Spectroscopy of Supersonic Expansions

Time-resolved coherent Raman techniques have found wide application in the study of dephasing phenomena in solids and liquids. In these experiments ultrashort pump and Stokes pulses excite a coherent oscillation in the medium at the resonant transition frequency. A separate delayed probe beam is used to produce coherent Raman scattering, the intensity of which decays with delay time that is due to dephasing processes. We propose a similar excite and probe scheme for novel Fourier-transform Raman spectroscopy (FTRS) with high-frequency resolution.