@ARTICLE{Mroziewicz_B._On_2019,
 author={Mroziewicz, B. and Pruszyńska-Karbownik, E.},
 volume={vol. 27},
 number={No 2},
 journal={Opto-Electronics Review},
 pages={161-173},
 howpublished={online},
 year={2019},
 publisher={Polish Academy of Sciences (under the auspices of the Committee on Electronics and Telecommunication) and Association of Polish Electrical Engineers in cooperation with Military University of Technology},
 abstract={Lasers emitting mid-infrared (MIR) beams have become indispensable for spectroscopy, free space communication or remote security measures. To the one of the most promising families of the lasers suitable for these applications certainly belongs a group of the Quantum Cascade Lasers (QCL). However, among the conditions they must satisfy there is a high enough radiance of the beam they emit. Radiance depends in a complicated way on the laser output power and optical quality of the laser beam. This paper has been devoted to a description and a short analysis of the factors that decide about radiance of so far developed QCLs. Literature concerning both single devices and QCL arrays operating in beam combining systems have been examined and results described. The survey may be useful for estimation of how far the QCLs have come of age.},
 type={Article},
 title={On the beam radiance of mid-infrared quantum cascade lasers–A review},
 URL={http://journals.pan.pl/Content/115250/PDF/opelre_2019_27_2_161-173.pdf},
 keywords={Quantum cascade lasersLaser arrays, Output power, Beam quality factors, Beam, Radiance, Brightness},
}