High efficiency room temperature laser emission in heavily doped Yb:YLF.
We report the tunable, CW and quasi CW laser operation at room temperature of an highly doped (30% at.) Yb:YLF crystal longitudinally pumped by a fiber coupled laser diode array. The CW output power is 1.15 W vs. an absorbed pump power of 6 W, with a slope efficiency of 31%. In quasi-CW operation (20% duty factor @10 Hz) an output power of 4 W with an absorbed power of 9.5 W, and a slope efficiency of 62.8% were obtained. The tuning range spans from 1022 to 1075 nm. To our knowledge, these are among the best experimental results obtained at room temperature with Yb doped YLF.
Vannini
Matteo
M
Toci
Guido
G
Alderighi
Daniele
D
Parisi
Daniela
D
Cornacchia
Francesco
F
Tonelli
Mauro
M