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Edge- and surface-emitting 10.1 μm quantum cascade distributed feedback lasers
Auteur(s)
Editeur(s)
Faist, Jérôme
Beck, Mattias
Müller, Antoine
Oesterle, Ursula
Date de parution
2000
In
Physica E: Low-dimensional Systems and Nanostructures, Elsevier, 2000/7/1-2/25-28
Résumé
We present measurement results on high-power low-threshold quantum cascade-distributed feedback lasers emitting infrared radiation at 10.16 μm. A lateral current injection scheme allowed the use of a strongly coupled surface grating without metal coverage and epitaxial re-growth. Although this design resulted in a simplified processing, the fabrication of high-performance edge- and surface-emitting devices was demonstrated. For the edge-emitting laser, we used a standard first-order grating with a period of 1.57 μm, and for the surface emitter, a second-order grating with a period of 3.15 μm was used. Maximal output powers in excess of 200 mW at 85 K and 70 mW at 300 K were achieved for both configurations. The threshold current densities at 85 K (300 K) were 1.85 kA/cm<sup>2</sup> (5.4 kA/cm<sup>2</sup>) and 2.1 kA/cm<sup>2</sup> (5.6 kA/cm<sup>2</sup>) for edge and surface emitters, respectively.
Autre version
http://dx.doi.org/10.1016/S1386-9477(99)00265-9
Type de publication
Resource Types::text::journal::journal article
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