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Proceedings Paper

(AlGaIn)(AsSb) quantum well diode lasers with improved beam quality
Author(s): Joachim Wagner; Eva Geerlings; Gudrun Kaufel; Marc T. Keleman; Christian Manz; Christian Pfahler; Marcel Rattunde; Johannes Schmitz
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Paper Abstract

Type-I diode lasers based on the (AlGaIn)(AsSb) material family are ideally suited to cover the 2-3 μm wavelength range. In this paper recent progress in terms of output power, beam quality and wavelength tunability is reported, achieved for broad-area and tapered single emitters as well as for linear broad-area laser arrays. Special attention has been paid to the reduction of the fast axis far-field beam divergence, employing improved vertical waveguide laser designs. Furthermore, tapered diode lasers have been developed in order to increase the slow axis beam quality at high output powers. An improved beam quality is of particular importance as many applications, including coupling the laser output into an optical fiber or into an external resonator, require diode lasers with a low beam divergence and a high brightness rather than sheer output power.

Paper Details

Date Published: 25 March 2005
PDF: 9 pages
Proc. SPIE 5732, Quantum Sensing and Nanophotonic Devices II, (25 March 2005); doi: 10.1117/12.606623
Show Author Affiliations
Joachim Wagner, Fraunhofer-Institut fur Angewandte Festkorperphysik (Germany)
Eva Geerlings, Fraunhofer-Institut fur Angewandte Festkorperphysik (Germany)
Gudrun Kaufel, Fraunhofer-Institut fur Angewandte Festkorperphysik (Germany)
Marc T. Keleman, Fraunhofer-Institut fur Angewandte Festkorperphysik (Germany)
Christian Manz, Fraunhofer-Institut fur Angewandte Festkorperphysik (Germany)
Christian Pfahler, Fraunhofer-Institut fur Angewandte Festkorperphysik (Germany)
Marcel Rattunde, Fraunhofer-Institut fur Angewandte Festkorperphysik (Germany)
Johannes Schmitz, Fraunhofer-Institut fur Angewandte Festkorperphysik (Germany)


Published in SPIE Proceedings Vol. 5732:
Quantum Sensing and Nanophotonic Devices II
Manijeh Razeghi; Gail J. Brown, Editor(s)

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