High power ytterbium-doped rod-type three-level photonic crystal fiber laser.
In this paper, we investigate power scalability of ytterbium-doped ultra large core photonic crystal fiber laser operating on the zero-line transition. We first report on an 80 microm core diameter ytterbium-doped rod-type photonic crystal fiber laser emitting up to 94 W in continuous wave regime when operating at 977 nm, which is to our knowledge the highest output power ever achieved from a single-mode solid-state laser operating at this wavelength. Key parameters of ytterbium-doped three-level laser, such as transparency pump intensity, pump absorption saturation, and gain competition between three and four-level laser operation are then discussed in the particular context of high power fiber laser operating at 977 nm.
Boullet
Johan
J
boullet@celia.u-bordeaux1.fr
Zaouter
Yoann
Y
Desmarchelier
Rudy
R
Cazaux
Matthieu
M
Salin
François
F
Saby
Julien
J
Bello-Doua
Ramatou
R
Cormier
Eric
E