Optical Generation and Detection of Carriers in Ultrafast Pump-Probe Spectroscopy of Semiconductors
One of the most common experimental approaches to studying the relaxation of carriers in semiconductors on the femtosecond time scale is pump-and-probe spectroscopy. Essentially, it consists in exciting nonequilibrium carriers by an intense femtosecond pump pulse and then probing the density distributions with a weak time-delayed probe pulse. Comparison of such pump-and-probe spectra with theoretical simulations of carrier kinetics provides important information for understanding relaxation mechanisms that govern ultrafast carrier dynamics.1
KeywordsPump Pulse Probe Transmission Bloch Equation Carrier Distribution Dephasing Time
Unable to display preview. Download preview PDF.