Domain formation and self-sustained oscillations in quantum cascade lasers★
Mathematical Physics and NanoLund, Lund University,
2 Synchrotron Radiation Physics and NanoLund, Lund University, 22100 Lund, Sweden
3 Advanced Electronics and Photonics Research Centre, National Research Council, Ottawa, ON K1A 0R6, Canada
a e-mail: Andreas.Wacker@fysik.lu.se
Received in final form: 5 February 2019
Published online: 3 April 2019
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 of negative differential resistance and we clarify the condition determining whether the boundary between domains of different electric field can become stationary.
© The Author(s) 2019. This article is published with open access at Springerlink.com
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