Highly efficient optically pumped vertical-emitting semiconductor laser with more than 20 W average output power in a fundamental transverse mode

B Rudin; A Rutz; M Hoffmann; D J H C Maas; A-R Bellancourt; E Gini; T Südmeyer; U Keller

doi:10.1364/ol.33.002719

Highly efficient optically pumped vertical-emitting semiconductor laser with more than 20 W average output power in a fundamental transverse mode

Opt Lett. 2008 Nov 15;33(22):2719-21. doi: 10.1364/ol.33.002719.

Authors

B Rudin¹, A Rutz, M Hoffmann, D J H C Maas, A-R Bellancourt, E Gini, T Südmeyer, U Keller

Affiliation

¹ Department of Physics, Institute of Quantum Electronics, ETH Zürich, Zürich, Switzerland. rudin@phys.ethz.ch

PMID: 19015720
DOI: 10.1364/ol.33.002719

Abstract

We have demonstrated an optically pumped vertical-external-cavity surface-emitting laser (OP-VECSEL) generating more than 20 W of cw output power in a fundamental transverse mode (M2 approximately 1.1) at 960 nm. The laser is highly efficient with a slope efficiency of 49%, a pump threshold of 4.4 W, and an overall optical-to-optical efficiency of 43%.