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Proceedings Paper

Experimental analysis of thermal properties of AlGaAs/GaAs quantum cascade lasers
Author(s): Kamil Pierściński; Dorota Pierścińska; Magorzata Iwińska; Kamil Kosiel; Anna Szerling; Piotr Karbownik; Maciej Bugajski
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Paper Abstract

We report on detailed investigation of thermal performance of AlGaAs/GaAs quantum cascade lasers (QCL) emitting at wavelength of 9.4 ìm, with a particular emphasis on the influence of different mounting options and device geometries, which are compared in terms of their influence on the relative increase of the active region temperature. The spatially resolved thermoreflectance (TR) is used to register temperature distribution over the facet of pulse operated QCLs. The devices' thermal resistances are derived from experimental data. Thermal resistances of 15 ìm devices are the highest among the investigated device widths. By combining the experimental and numerical results, an insight into the thermal management in QCLs is gained. The thermal design focuses on optimization of heat dissipation in the device, improving the thermal behavior of QCLs. This is essential in order to increase the maximal operation temperature to further progress the applications of QCLs.

Paper Details

Date Published: 15 May 2012
PDF: 12 pages
Proc. SPIE 8432, Semiconductor Lasers and Laser Dynamics V, 84320M (15 May 2012); doi: 10.1117/12.922019
Show Author Affiliations
Kamil Pierściński, Institute of Electron Technology (Poland)
Dorota Pierścińska, Institute of Electron Technology (Poland)
Magorzata Iwińska, Institute of Electron Technology (Poland)
Kamil Kosiel, Institute of Electron Technology (Poland)
Anna Szerling, Institute of Electron Technology (Poland)
Piotr Karbownik, Institute of Electron Technology (Poland)
Maciej Bugajski, Institute of Electron Technology (Poland)


Published in SPIE Proceedings Vol. 8432:
Semiconductor Lasers and Laser Dynamics V
Krassimir Panajotov; Marc Sciamanna; Angel Valle; Rainer Michalzik, Editor(s)

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