title: High efficiency room temperature laser emission in heavily doped Yb:YLF.
abstract: 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.
authors: Matteo
authors: M
authors: Vannini
authors: Guido
authors: G
authors: Toci
authors: Daniele
authors: D
authors: Alderighi
authors: Daniela
authors: D
authors: Parisi
authors: Francesco
authors: F
authors: Cornacchia
authors: Mauro
authors: M
authors: Tonelli