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A 2.65-kW Yb:YAG single-rod laser

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2 Author(s)
H. Bruesselbach ; HRL Labs., Malibu, CA, USA ; D. S. Sumida

We report a continuous-wave average output power of 2.65 kW from a single Yb:YAG laser rod pumped with 9000 W from 940 nm InGaAs laser diodes. To the best of our knowledge, this is the highest average output power ever reported from a single Yb:YAG gain element. The optical-to-optical efficiency (i.e., output power to raw laser diode optical power) was 28%. We also obtained 860 W with an M2 of 2.1 when pumping with 6000 W, obtaining 14% optical-to-optical efficiency.

Published in:

IEEE Journal of Selected Topics in Quantum Electronics  (Volume:11 ,  Issue: 3 )