Nonlinear-Optical Laser Sources for Femtosecond Stimulated Raman Scattering

Three laser sources are developed and jointly optimized for femtosecond stimulated Raman spectroscopy (FSRS). A key component consists of a broadly tunable (450-750 nm) and intense (10 J) picosecond Raman pump. Transient Raman spectra from electronically excited molecules in solution will be determined as spectroscopic standard. For this purpose we use molecules which are accessible to quantum-chemical calculations (stilbene, anthracene, perylene) or were already studied by FSRS (carotene).