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Optical and Quantum Electronics

Erschienen in:

01.12.2017

Self-consistent simulations of quantum cascade laser structures for frequency comb generation

verfasst von: Christian Jirauschek, Petar Tzenov

Erschienen in: Optical and Quantum Electronics | Ausgabe 12/2017

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Abstract

Maxwell–Bloch equations are widely used to model the dynamics due to coherent light-matter interaction in quantum cascade laser (QCL) structures, which plays an essential role especially for the generation of frequency combs and mode-locked pulses. While the modest numerical complexity of the Maxwell–Bloch system allows for a full spatiotemporal treatment, its main disadvantage is the inclusion of dissipation by empirical dephasing rates and electron lifetimes. We present a self-consistent multi-domain approach which couples the Maxwell–Bloch equations to advanced carrier transport simulations based on a density matrix Monte Carlo technique, yielding the scattering and dephasing rates. In this way, the compact spatiotemporal modeling of the carrier-light dynamics by the Maxwell–Bloch system can be combined with the versatility and reliability of self-consistent carrier transport approaches. Simulation results are shown for a QCL-based terahertz frequency comb source, and good agreement with experiment is obtained.

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Titel: Self-consistent simulations of quantum cascade laser structures for frequency comb generation
verfasst von: Christian Jirauschek
Petar Tzenov
Publikationsdatum: 01.12.2017
Verlag: Springer US
Erschienen in: Optical and Quantum Electronics / Ausgabe 12/2017
Print ISSN: 0306-8919
Elektronische ISSN: 1572-817X
DOI: https://doi.org/10.1007/s11082-017-1253-7

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