The dynamics of optically generated carriers in GaAs is investigated measuring transmission changes with ultrafast time and high spectral resolution. A novel two-color 15 fs Ti:sapphire laser system allows the observation of the femtosecond kinetics of energetic carrier distributions at excitation densities as low as 10¹⁵cm^-3. For the first time, LO phonon emission of highly excited nonequilibrium electrons is directly monitored. The contribution of the hole distribution to the data and the influence of carrier-carrier scattering is studied.
No takes yet. Share an insight, caveat, or question.
Leitenstorfer et al. (1996) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: