Towards CW modelocked laser on chip -- large mode area and NLI for stretched pulse mode locking

TL;DR

This paper investigates integrated modelocked lasers on chip, focusing on large mode area designs and nonlinear effects to enable ultrashort, high power pulses suitable for advanced optical systems.

Contribution

It introduces a large mode area laser design and explores mode-locking regimes, including the use of a silicon nitride nonlinear interferometer for tunability.

Findings

Demonstrated high power pulse generation with large mode area laser

Studied dispersion-managed soliton regimes in integrated cavities

Analyzed tunability of a silicon nitride nonlinear interferometer

Abstract

Integrated modelocked lasers with high power are of utmost importance for next generation optical systems that can be field-deployable and mass produced. Here we study fully integrated modelocked laser designs that have the potential to generate ultrashort, high power, and high quality pulses. We explore a large mode area laser for high power pulse generation and study the various mode-locking regimes of dispersion managed soliton pulses in net anomalous and net normal dispersion cavities. Furthermore, we study numerically and experimentally general properties and tunability of a fast integrated saturable absorber based on low loss silicon nitride nonlinear interferometer. We believe this work guides the exploration of the future integrated high power modelocked lasers.