Title :
Heat Management in High-Power Vertical-External-Cavity Surface-Emitting Lasers
Author :
Chernikov, Alexej ; Herrmann, Jens ; Koch, Martin ; Kunert, Bernardette ; Stolz, Wolfgang ; Chatterjee, Sangam ; Koch, Stephan W. ; Wang, Tsuei-Lian ; Kaneda, Yushi ; Yarborough, J. Michael ; Hader, Jörg ; Moloney, Jerome V.
Author_Institution :
Fac. of Phys. & Mater. Sci. Center, Philipps-Univ. Marburg, Marburg, Germany
Abstract :
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.
Keywords :
heat transfer; laser cavity resonators; optical pumping; quantum well lasers; surface emitting lasers; heat distribution; heat generation; heat management; heat removal; heat spreading; heat transfer; high-power vertical-external-cavity surface-emitting lasers; optical pumping; power scaling; Laser excitation; Pump lasers; Thermal factors; Vertical cavity surface emitting lasers; High-power operation; VECSEL; thermal properties;
Journal_Title :
Selected Topics in Quantum Electronics, IEEE Journal of
DOI :
10.1109/JSTQE.2011.2115995
