Dynamics of emission from an (InGa)AsP heterolaser with two-channel lateral confinement

An investigation was made of the dynamics of amplitude modulation of 1.3-μm radiation emitted by highly efficient low-threshold stripe heterolasers with lateral confinement due to two parallel epitaxial buried channels in a double heterostructure. The rise time of the transient characteristic was 0.1–0.6 ns, depending on the modulation regime. Single radiation pulses of duration less than 70 ps and regular trains of such pulses of frequency ~ 1 GHz were generated. The amplitude-frequency characteristics were determined under weak modulation conditions.