High-Power High-Brightness Operation of a 2.25-[Formula Omitted]m (AlGaIn)(AsSb)-Based Barrier-Pumped Vertical-External-Cavity Surface-Emitting Laser

We report on the output power performance and beam profile analysis of an optically pumped GaSb-based vertical-external-cavity surface-emitting laser operating at 2.25 mum. The use of a SiC heatspreader and a precise control of the temperature-dependent modal gain allowed for improved high-power ope...

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Bibliographic Details
Published in:IEEE photonics technology letters 2008-04, Vol.20 (7), p.502-504
Main Authors: Rosener, B, Schulz, N, Rattunde, M, Manz, C, Kuhler, K, Wagner, J
Format: Article
Language:English
Subjects:
Beams (radiation)
Gain
Gaussian
Lasers
Optimization
Photonics
Silicon carbide
Surface emitting lasers
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Summary:We report on the output power performance and beam profile analysis of an optically pumped GaSb-based vertical-external-cavity surface-emitting laser operating at 2.25 mum. The use of a SiC heatspreader and a precise control of the temperature-dependent modal gain allowed for improved high-power operation with a maximum continuous-wave output power of 3.4W at 10degC heatsink temperature. At 0degC, a maximum output power > 2.9 W was observed and still more than 1.6 W were obtained at room temperature. Using second-order moments for the definition of the beam diameter, a beam propagation factor M@@u2@approx. 5 of was measured at maximum output power. Optimizing the beam quality of the laser resulted in a beam profile close to the Gaussian TEM@@d00@ mode (M@@u2@ ap 1.5) and still more than 2-W output power at 0degC.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2008.918874