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Proceedings Paper

Photodarkening kinetics in a high-power YDFA versus CW or short-pulse seed conditions
Author(s): Alain Jolly; Cyril Vinçont; Johan Boullet
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Paper Abstract

We propose an innovating model to describe the kinetics of competing photo-darkening and photo-bleaching phenomena in high-power, Ytterbium-Doped-Fibre-Amplifiers. This model makes use of aggregated species of trivalent Ytterbium and divalent ions, which operate as primarily efficient color-centers. This ensures multi-photon excitation, partly from the pump and partly from the signal. The fit of numerical computations with dedicated experiments help to validate our theoretical assumptions, in the definition of the involved physics. Potential applications of this study include further discussions for the selection of processing options with fibre-manufacturers and the optimization of operating conditions.

Paper Details

Date Published: 22 February 2017
PDF: 14 pages
Proc. SPIE 10083, Fiber Lasers XIV: Technology and Systems, 100831T (22 February 2017); doi: 10.1117/12.2250801
Show Author Affiliations
Alain Jolly, ALPhANOV, Institut d'Optique d'Aquitaine (France)
CEA, Ctr. d'Etudes Scientifiques et Techniques d'Aquitaine (France)
Cyril Vinçont, ALPhANOV, Institut d'Optique d'Aquitaine (France)
Johan Boullet, ALPhANOV, Institut d'Optique d'Aquitaine (France)

Published in SPIE Proceedings Vol. 10083:
Fiber Lasers XIV: Technology and Systems
Craig A. Robin; Ingmar Hartl, Editor(s)

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