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4 March 2015 1180nm VECSEL with 50 W output power
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Abstract
We report on the development of a high-power vertical-external-cavity surface-emitting laser (VECSEL) emitting around 1180 nm. The laser emitted 50 W of output power when the mount of the gain chip was cooled to -15°C. The output power was measured using a 97% reflective cavity end-mirror. The VECSEL was arranged to form an I-shaped cavity with a length of ~100 mm; the gain chip and a curved dielectric mirror (RoC=150) acting as cavity end mirrors. The gain chip was grown by molecular beam epitaxy (MBE) and incorporated 10 GaInAs/GaAs quantum wells. For efficient heat extraction, the chip was capillary bonded to a diamond heat spreader which was attached to a TEC-cooled copper mount. The maximum optical-to-optical conversion efficiency of 28% was achieved for 42 W of output power and -15°C mount temperature.
© (2015) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Emmi Kantola, Tomi Leinonen, Sanna Ranta, Miki Tavast, Jussi-Pekka Penttinen, and Mircea Guina "1180nm VECSEL with 50 W output power", Proc. SPIE 9349, Vertical External Cavity Surface Emitting Lasers (VECSELs) V, 93490U (4 March 2015); https://doi.org/10.1117/12.2079480
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