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physics.app-ph2018
Domain formation and self-sustained oscillations in quantum cascade lasers
Tim Almqvist, David O. Winge, Emmanuel Dupont +1
We study oscillations in quantum cascade lasers due to traveling electric field domains, which are observed both in simulations and experiments. These oscillations occur in a range…
cond-mat.mes-hall2018
Ignition of quantum cascade lasers in a state of oscillating electric field domains
David O. Winge, Emmanuel Dupont, Andreas Wacker
Quantum Cascade Lasers (QCLs) are generally designed to avoid negative differential conductivity (NDC) in the vicinity of the operation point in order to prevent instabilities. We…