Title :
A 2.65-kW Yb:YAG single-rod laser
Author :
Bruesselbach, Hans ; Sumida, David S.
Author_Institution :
HRL Labs., Malibu, CA, USA
Abstract :
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.
Keywords :
optical pumping; solid lasers; ytterbium; 2.65 kW; 6000 W; 860 W; 9000 W; 940 nm; InGaAs; InGaAs laser diodes; YAG:Yb; YAl5O12:Yb; Yb:YAG gain element; Yb:YAG laser; average output power laser; continuous-wave laser; optical-to-optical efficiency; rod pumped laser; single-rod laser; Cooling; Diodes; Indium gallium arsenide; Laser excitation; Lenses; Optical pumping; Optical resonators; Power generation; Power lasers; Pump lasers; Laser thermal factors; YAG lasers; ytterbium;
Journal_Title :
Selected Topics in Quantum Electronics, IEEE Journal of
DOI :
10.1109/JSTQE.2005.850600
