Picosecond Time-Resolved Raman Spectroscopic System

Picosecond Time-Resolved Raman Spectroscopic System

Pump and probe wavelengths are independently tunable with two OPAs.

Fig. 1. Setup

Fig. 2. Apparatus

Result

Fig. 3. Time-resolved Raman Spectra of S₁ trans-stilbene in an Ionic Liquid BmimTf₂N

Fig. 4. Magnified view

Peak shift to higher wavenumber → Microscopic thermal diffusion dynamics in ionic liquids

Fig. 5. Thermal diffusion