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Photonics 2016, 3(2), 30; doi:10.3390/photonics3020030

Modeling the Electro-Optical Performance of High Power Mid-Infrared Quantum Cascade Lasers

1
Diehl BGT Defence, Alte Nussdorfer Strasse 13, Überlingen 88662, Germany
2
Fraunhofer Institute for Applied Solid State Physics, Tullastrasse 72, Freiburg 79108, Germany
*
Author to whom correspondence should be addressed.
Received: 24 March 2016 / Revised: 10 May 2016 / Accepted: 10 May 2016 / Published: 17 May 2016
(This article belongs to the Special Issue Quantum Cascade Lasers - Advances and New Applications)
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Abstract

Performance modeling of the characteristics of mid-infrared quantum cascade lasers (MIR QCL) is an essential element in formulating consistent component requirements and specifications, in preparing guidelines for the design and manufacture of the QCL structures, and in assessing different modes of operation of the laser device. We use principles of system physics to analyze the electro-optical characteristics of high power MIR QCL, including thermal backfilling of the lower laser level, hot electron effects, and Stark detuning during lasing. The analysis is based on analytical modeling to give simple mathematical expressions which are easily incorporated in system-level simulations of defense applications such as directed infrared countermeasures (DIRCM). The paper delineates the system physics of the electro-optical energy conversion in QCL and the related modeling. The application of the performance model to a DIRCM QCL is explained by an example. View Full-Text
Keywords: quantum cascade lasers; performance modeling; directed infrared countermeasures quantum cascade lasers; performance modeling; directed infrared countermeasures
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Tholl, H.D.; Yang, Q.; Wagner, J. Modeling the Electro-Optical Performance of High Power Mid-Infrared Quantum Cascade Lasers. Photonics 2016, 3, 30.

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