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Heat Management in High-Power Vertical-External-Cavity Surface-Emitting Lasers

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12 Author(s)
Chernikov, A. ; Fac. of Phys. & Mater. Sci. Center, Philipps-Univ. Marburg, Marburg, Germany ; Herrmann, J. ; Koch, M. ; Kunert, B.
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The thermal properties of a high-power vertical-external-cavity surface-emitting laser (VECSEL) are studied experimentally, focusing on the generation, distribution, and removal of excess heat under extreme pumping conditions. Different heat-spreading and heat-transfer approaches are analyzed. The performance of the device is optimized yielding a maximum emitted power beyond 70 W from a single spot. Finally, the potential for power-scaling in VECSELs and its restrictions are examined.

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Selected Topics in Quantum Electronics, IEEE Journal of  (Volume:17 ,  Issue: 6 )