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300-W cryogenically cooled Yb:YAG laser

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4 Author(s)
Ripin, D.J. ; Lincoln Lab., MIT, Lexington, MA, USA ; Ochoa, J.R. ; Aggarwal, R.L. ; Tso Yee Fan

Thermooptic effects often limit the power and beam quality of bulk-solid-state lasers. Cryogenically cooled (∼100 K) Yb:YAG lasers have been previously demonstrated to have relatively low thermooptic effects and high efficiency due to improved material properties at low temperatures. In this work, >300-W average power with M2∼1.2 and 64% optical-optical efficiency has been demonstrated from an end-pumped-rod geometry power oscillator. To our knowledge, this is the highest average power to date from a cryogenically cooled Yb:YAG laser.

Published in:

Quantum Electronics, IEEE Journal of  (Volume:41 ,  Issue: 10 )