
Proceedings Paper
Nonlinear dynamics of quantum cascade lasers with optical feedbackFormat | Member Price | Non-Member Price |
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Paper Abstract
Quantum Cascade (QC) lasers are widely used in optical communications, high-resolution spectroscopy, imaging, and
remote sensing due to their wide spectral range, going from mid-infrared to the terahertz regime. The dynamics of QClasers
are dominated by their ultrafast carrier lifetime, typically of the order of a few picoseconds. The combination of
optical nonlinearities and ultrafast dynamics is an interesting feature of QC-lasers, and investigating the dynamical
properties of such lasers gives unprecedented insights into the underlying physics of the components, which is of interest
for the next generation of QC devices. A particular feature of QC-lasers is the absence of relaxation oscillations, which is
the consequence of the relatively short carrier lifetime compared to photon lifetime. Optical feedback (i.e. self-injection)
is known to be a robust technique for stabilizing or synchronizing a free-running laser, however its effect on QC-lasers
remains mostly unexplored. This work aims at discussing the dynamical properties of QC-lasers operating under optical
feedback by employing a novel set of rate equations taking into account the upper and lower lasing levels, the bottom
state as well as the gain stage’s cascading. This work analyzes the static laser properties subject to optical feedback and
provides a comparison with experiments. Spectral analysis reveals that QC-lasers undergo distinct feedback regimes
depending on the phase and amplitude of the reinjected field, and that the coherence-collapse regime only appears in a
very narrow range of operation, making such lasers much more stable than their interband counterparts.
Paper Details
Date Published: 8 February 2015
PDF: 8 pages
Proc. SPIE 9370, Quantum Sensing and Nanophotonic Devices XII, 937014 (8 February 2015); doi: 10.1117/12.2079782
Published in SPIE Proceedings Vol. 9370:
Quantum Sensing and Nanophotonic Devices XII
Manijeh Razeghi; Eric Tournié; Gail J. Brown, Editor(s)
PDF: 8 pages
Proc. SPIE 9370, Quantum Sensing and Nanophotonic Devices XII, 937014 (8 February 2015); doi: 10.1117/12.2079782
Show Author Affiliations
L. Jumpertz, Télécom ParisTech (France)
Alcatel Thales III-V Lab. (France)
S. Ferré, Alcatel Thales III-V Lab. (France)
Kevin Schires, Télécom ParisTech (France)
Alcatel Thales III-V Lab. (France)
S. Ferré, Alcatel Thales III-V Lab. (France)
Kevin Schires, Télécom ParisTech (France)
Published in SPIE Proceedings Vol. 9370:
Quantum Sensing and Nanophotonic Devices XII
Manijeh Razeghi; Eric Tournié; Gail J. Brown, Editor(s)
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