Stabilization of VCSEL radiation using external optical injection with consideration of nonlinear gain effects
Elizaveta A. Yarunova1,2, Anton A. Krents1,2, Nonna E. Molevich1,2;
1Samara National Research University, Samara, Russia
2Lebedev Physical Institute, Samara, Russia
Abstract
A free-running broad-area surface-emitting laser with a vertical resonator (VCSEL) emits irregular dynamics because it is subject to modulation instabilities. It is known that additional external optical injection of weak amplitude can suppress the instabilities and obtain spatially uniform radiation. For a qualitative assessment of the efficiency of the method, it is necessary to take into account the effects of nonlinear amplification for population inversion. It is shown that the consideration of nonlinear amplification does not destroy the stabilization effect, but only slightly increases the threshold value of the amplitude of optical injection necessary for stabilization.
Speaker
Yarunova Elizaveta
Samara National Research University
Russia
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