Antiphase dynamics in a multimode semiconductor laser with optical injection

TL;DR

This paper presents an experimental and theoretical study of antiphase dynamics in a two-mode semiconductor laser with optical injection, revealing complex bifurcation behaviors and mode switching phenomena.

Contribution

It introduces a detailed experimental investigation combined with a four-dimensional rate equation model to analyze antiphase dynamics in a specially designed two-mode laser.

Findings

Antiphase dynamics observed in the laser device.

Bifurcation analysis highlights torus and saddle-node bifurcations.

Model accurately reproduces experimental dynamical scenarios.

Abstract

A detailed experimental study of antiphase dynamics in a two-mode semiconductor laser with optical injection is presented. The device is a specially designed Fabry-Perot laser that supports two primary modes with a THz frequency spacing. Injection in one of the primary modes of the device leads to a rich variety of single and two-mode dynamical scenarios, which are reproduced with remarkable accuracy by a four dimensional rate equation model. Numerical bifurcation analysis reveals the importance of torus bifurcations in mediating transitions to antiphase dynamics and of saddle-node of limit cycle bifurcations in switching of the dynamics between single and two-mode regimes.