Highly efficient 750 W tapered double-clad ytterbium fiber laser.
The results of theoretical and experimental studies of active tapered double-clad fibers, intending the optimization of its imperative parameters--tapering ratio, longitudinal profile, core/cladding diameters ratio, are presented. Using a refined taper geometry we have demonstrated power scaling of a ytterbium fiber laser pumped by low-brightness, cost-effective laser diodes up to 750 W, with 80% efficiency.
Filippov
Valery
V
Optoelectronics Research Centre, Tampere University of Technology, 33101 Tampere, Finland. valery.filippov@tut.fi
Kerttula
Juho
J
Chamorovskii
Yuri
Y
Golant
Konstantin
K
Okhotnikov
Oleg G
OG