Routes to chaos in a class-B laser coupled to a neutral resonator

TL;DR

This paper investigates the complex dynamics, including chaos and multistability, in a coupled class-B semiconductor microring laser and resonator system, revealing how different parameters influence stability and chaotic behavior.

Contribution

It provides a detailed analysis of the dynamical regions and transitions in a coupled laser-resonator system under common fabrication conditions, highlighting the conditions for stability and chaos.

Findings

Five dynamical regions identified based on pump rate and coupling strength.

Stable lasing with phase locking occurs at low or high coupling.

Chaos and multistability emerge between stable regions.

Abstract

We study the dynamics of a class-B semiconductor microring laser coupled to a neutral microring resonator for common fabrication parameters. For zero detuning between the resonators, we identify five dynamical regions controlled by the normalized pump rate of the laser and coupling strength between the resonators. These regions show stable lasing with phase locking for either sufficiently small or large coupling strength parameter values. Multistability and chaos arise in between these stable regions where at least one fixed point is attractive. The transition from stable to unstable lasing regions in the parameter space phase diagram is a crossover.