High-power in-band pumped Er:YAG laser at 1617 nm.
High-power room-temperature operation of an Er:YAG laser at 1617 nm in-band pumped by a cladding-pumped Er,Yb fiber laser at 1532 nm is reported. The Er:YAG laser yielded 31 W of continuous-wave output in a beam with M(2) approximately = 2.2 for 72 W of incident pump power. The threshold pump power was 4.1 W and the slope efficiency with respect to incident pump power was approximately 47%. The influence of erbium doping level and resonator design on laser performance is discussed, and the prospects for further increase in output power and improvement in lasing efficiency are considered.
Optoelectronics Research Center, University of Southampton, Southampton, SO17 1BJ, UK. jwk@orc.soton.ac.uk
J W
JW
Kim
D Y
DY
Shen
J K
JK
Sahu
W A
WA
Clarkson
D000669:Amplifiers, Electronic; D003198:Computer Simulation; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D053844:Lasers, Solid-State; D008962:Models, Theoretical; D014159:Transducers