Title :
Beam characteristics of mid-IR quantum cascade lasers
Author :
Krishnaswami, Kannan ; Bernacki, Bruce ; Cannon, Bret ; Phillips, Mark ; Hô, Nicolas ; Allen, Paul ; Anheier, Norman
Author_Institution :
Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, WA 99352 USA
Abstract :
We report divergence, astigmatism and M2 measurements for 8.77gm quantum cascade lasers. Measurements showed divergence of 62° by 32° FWHM f 2° and M2 values of 1.81 and 1.22 for the fast and slow axes respectively. Astigmatism at source was ~4gm, less than half a wave.
Keywords :
Apertures; Detectors; Dielectric substrates; Diffraction; Indium phosphide; Laser beams; Lenses; Optical propagation; Quantum cascade lasers; Vision defects;
Conference_Titel :
Quantum Electronics and Laser Science Conference, 2007. QELS '07
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
978-1-55752-834-6
DOI :
10.1109/QELS.2007.4431123
