Investigation of spatial hole burning and linewidth enhancement factor impact on distributed-feedback quantum cascade lasers dynamics

Sara Zaminga; Lorenzo Columbo; Carlo Silvestri; Mariangela Gioannini; Frédéric Grillot

doi:10.1117/12.3001622

11 March 2024 Investigation of spatial hole burning and linewidth enhancement factor impact on distributed-feedback quantum cascade lasers dynamics

Sara Zaminga, Lorenzo Columbo, Carlo Silvestri, Mariangela Gioannini, Frédéric Grillot

Author Affiliations +

Proceedings Volume 12880, Physics and Simulation of Optoelectronic Devices XXXII; 1288002 (2024) https://doi.org/10.1117/12.3001622
Event: SPIE OPTO, 2024, San Francisco, California, United States

Abstract

In this manuscript, we employ a time-domain traveling-wave model with a coupled-mode theory to characterize the dynamic behavior of a mid-Infrared (MIR) Quantum Cascade Laser (QCL) in the Distributed-Feedback (DFB) configuration. Our investigation underscores the crucial influence of the linewidth enhancement factor (LEF) and spatial hole burning (SHB) on the single-mode behavior of DFB QCLs. Disregarding these factors leads to an overestimation of the range of pump currents granting single-mode emission and results in an inaccurate simulation of the multimodal dynamics of DFB QCLs. The numerical simulations presented in this work closely align with experimental observations, specifically focusing on a DFB QCL operating at a wavelength of 9.34 μm.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Sara Zaminga, Lorenzo Columbo, Carlo Silvestri, Mariangela Gioannini, and Frédéric Grillot "Investigation of spatial hole burning and linewidth enhancement factor impact on distributed-feedback quantum cascade lasers dynamics", Proc. SPIE 12880, Physics and Simulation of Optoelectronic Devices XXXII, 1288002 (11 March 2024); https://doi.org/10.1117/12.3001622

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