Nonlinear optical properties of InSb: Hot-electron effects

Abstract

At high-power densities (≳ 2 MW/${\mathrm{cm}}^2$) the temporal dependence of transmitted 10.6-μm pulses in InSb shows strong pump-depletion effects. The phenomena are on a 30-nsec time scale and are interpreted as due to hot-electronic kinetics and electron-hole excitation processes. A model calculation employing rate constants from independent measurements reported in the literature yields good agreement with the experimental time evolution of the transmitted signal.