Optical In-Well Pumping of a Semiconductor Disk Laser With High Optical Efficiency

S.-S. Beyertt^a, M. Zorn^b, T. Kübler^a, H. Wenzel^b, M. Weyers^b, A. Giesen^a, G. Tränkle^b, U. Brauch^a
^a Institut für Strahlwerkzeuge, Universität Stuttgart, D-79569 Stuttgart, Germany
^b Ferdinand-Braun-Institut für Höchstfrequenztechnik, Gustav-Kirchhoff-Straße 4, D-12489 Berlin, Germany

Published in:
IEEE J. Quant. Electron. 41 (2005) 1439-1449.
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Abstract:
Optical in-well pumping is shown to lead to highly efficient operation of semiconductor disk-lasers using resonant absorption or using external optics. Pump radiation absorption of 70% at 940nm is demonstrated for a laser emitting around 980 nm. Laser output power was 1.9 W with slope efficiencies up to 35% based on the incident power.

Index Terms:
InGaAs, optical pumping, quantum well, semiconductor disk laser, vertical external-cavity surface-emitting laser (VCSEL).

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