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15-W fiber-coupled quantum-dot pump module

 
: Gilfert, C.; Pavelescu, E.-M.; Reithmaier, J.P.; Westphalen, T.; Traub, M.; Michel, N.; Krakowski, M.

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IEEE Photonics Technology Letters 24 (2012), Nr.12, S.1030-1032
ISSN: 1041-1135
Englisch
Zeitschriftenaufsatz
Fraunhofer ILT ()

Abstract
We have developed 920-nm pump modules for Yb-doped fiber amplifiers. The pump laser utilizes a single layer of In(AlGa)As/GaAs quantum-dot material as active region. Stable operation without thermoelectric cooling, output powers of up to 40 W, and wall-plug efficiencies of more than 50% have been achieved on processed broad-area laser bars. The packaged module reaches 15 W when coupled to a 200-m fiber.

: http://publica.fraunhofer.de/dokumente/N-206489.html