Investigation of transient electronic SRS by the excitation and probing technique using a double train of picosecond pump pulses

Abstract

The accumulation effect (i.e. the atomic-memory effect) in the transient electronic Stimulated Raman Scattering (SERS) in barium vapor under the influence of a picosecond pump pulse train has been observed for the first time. We used either a single (in the case of relative large T 2, T 2 > T) or a double pump pulse train with variable intertrain interval T' (in the case of small T 2, T 2 < T. Energy ratios of three pump and three Stokes pulses are sufficient to obtain the T 2 value at a single laser shot. There w a reasonable agreement between theory and experimental results.