Pump-Probe Technique

Femtosecond pump-probe spectroscopy enables to follow in real time material response on ultra-short laser action. In a pump-probe experiments, the main output pulse is divided into two beams: the sample is excited by one pulse train (pump) and the changes it produces in the target are probed by the second pulse (probe), which is suitably delayed with respect to the pump. Some properties related to the probe (reflectivity, absorption, phase shift) is then monitored to investigate the changes produced by the pump in the sample. Here we consider the problem statement similar to experiment of Agranat et al. JETP Letters, 2007, Vol. 85, No. 6, pp. 271–276.

Consider here the step-by-step filling in the form