Anomalous stimulated emission kinetics of semiconductor lasers with asymmetric waveguide structures. I. Experimental investigation using an external resonator

An experimental investigation was made of the stimulated emission kinetics of a single-heterostructure laser operating at 300°K with an external dispersive resonator. By varying the resonator parameters, it was possible to reproduce stimulated emission conditions with long and anomalous time delays, and "H-pulsing" conditions. It was shown that as the resonator losses increased, H-pulsing was converted into stimulated emission with an anomalous time delay, whereas a decrease in the losses produced normal stimulated emission conditions. The H pulse duration may reach 80 nsec.