System physics modeling of the electro-optical energy conversion in mid-infrared quantum cascade lasers

Hans Dieter Tholl; Franz Münzhuber

doi:10.1117/12.2240877

21 October 2016 System physics modeling of the electro-optical energy conversion in mid-infrared quantum cascade lasers

Hans Dieter Tholl, Franz Münzhuber

Proceedings Volume 9989, Technologies for Optical Countermeasures XIII; 99890D (2016) https://doi.org/10.1117/12.2240877
Event: SPIE Security + Defence, 2016, Edinburgh, United Kingdom

Abstract

The paper addresses the topic of the electro-optical energy conversion in mid-infrared high power QCL to support designers of optical countermeasure systems in assessing the utility of QCLs for their applications and in specifying the laser sub-system properly. We propose a quadratic dependence of the optical output power on the pump current (L-I curve) in order to reflect the influence of Stark shifting of the energy levels and of heating of the electrons in the planes perpendicular to the current direction. Formulae are given which relate the L-I model parameters to descriptors of these two effects. The model is simple enough to be implemented in system level simulations of the QCL performance in different modes of operations.

Citation Download Citation

Hans Dieter Tholl and Franz Münzhuber "System physics modeling of the electro-optical energy conversion in mid-infrared quantum cascade lasers", Proc. SPIE 9989, Technologies for Optical Countermeasures XIII, 99890D (21 October 2016); https://doi.org/10.1117/12.2240877

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