High-power in-band pumped Er:YAG laser at 1617 nm | Zendy

J. W. Kim | Zendy; D. Y. Shen | Zendy; J. K. Sahu | Zendy; W.A. Clarkson | Zendy

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High-power in-band pumped Er:YAG laser at 1617 nm

Author(s) -

J. W. Kim,

D. Y. Shen,

J. K. Sahu,

W.A. Clarkson

Publication year - 2008

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.16.005807

Subject(s) - materials science , optics , laser , slope efficiency , lasing threshold , fiber laser , laser power scaling , optoelectronics , erbium , laser pumping , resonator , laser beam quality , doping , laser beams , physics

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.

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