Nonlinear Dynamics in Semiconductor Lasers 2023 - Abstract

Gioannini, Mariangela

CW emission with ultra-damped relaxation oscillations and formation of optical combs in III-V/Si external cavity hybrid lasers

In recent years, laser sources based on hybrid integration of RSOA and silicon photonic mirrors have been attracting surging interest for their compatibility with silicon photonic platforms making them the key components for applications in optical communication and sensing. These hybrid external cavity lasers have been studied for their very narrow linewidth and wide tunability. In this contribution we present the results of our theoretical and numerical investigations focusing on other relevant characteristics of these lasers. Thanks to the flexibility in the design of the silicon photonics mirror, we can get very narrow band reflectors with bandwidth of a few GHz. We demonstrate that this can bring to ultra-dumped relaxation oscillation, very high tolerance to the external optical feedback and in some cases to generation of optical frequency combs.