High-speed modulation of terahertz quantum cascade lasers by acoustic phonon pulses

Paul Dean; Alex Valavanis; Aniela Dunn; John Cunningham; Anthony Kent

doi:10.1117/12.2577555

5 March 2021 High-speed modulation of terahertz quantum cascade lasers by acoustic phonon pulses

Paul Dean, Alex Valavanis, Aniela Dunn, John Cunningham, Anthony Kent

Proceedings Volume 11705, Novel In-Plane Semiconductor Lasers XX; 117050V (2021) https://doi.org/10.1117/12.2577555
Event: SPIE OPTO, 2021, Online Only

Abstract

The fast modulation of lasers is a fundamental requirement for applications in optical communications, high-resolution spectroscopy and metrology. Here, we report a new mechanism to modulate the emission from a terahertz frequency quantum cascade laser (QCL) device , whereby optically-generated acoustic phonon pulses are used to perturb the QCL bandstructure, enabling fast amplitude modulation that can be controlled using the QCL drive current or strain pulse amplitude. We show that this modulation can be explained using a perturbation theory analysis.

Conference Presentation

Citation Download Citation

Paul Dean, Alex Valavanis, Aniela Dunn, John Cunningham, and Anthony Kent "High-speed modulation of terahertz quantum cascade lasers by acoustic phonon pulses", Proc. SPIE 11705, Novel In-Plane Semiconductor Lasers XX, 117050V (5 March 2021); https://doi.org/10.1117/12.2577555

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