Degradation processes in high-power laser diodes under external optical feedback

J.W. Tomm1, M. Hempel1, M. Chi2, P.M. Petersen2, U. Zeimer3, and M. Weyers3

Published in:

Photonex 2013, High Power Diode Lasers and Systems Conference, Coventry, UK, Oct 16-17, pp. 42-43 (2013).

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The effect of moderate external feedback on the gradual degradation of 808 nm emitting AlGaAs-based high-power broad-area diode lasers is analyzed. Eventually the quantum well that actually experiences the highest total optical load remains unaffected by the aging, while severe impact to the waveguide by point defects is observed.

1 Max-Born-Institut für Nichtlineare Optik und Kurzzeitspektroskopie, Max-Born-Str. 2A, 12489 Berlin, Germany
2 DTU Fotonik, Technical University of Denmark, Frederiksborgvej 399, P.O. Box 49, DK-4000 Roskilde, Denmark
3 Ferdinand-Braun-Institut, Leibniz-Institut für Höchstfrequenztechnik, Gustav-Kirchhoff-Straße 4, D-12489 Berlin, Germany