High efficiency room temperature laser emission in heavily doped Yb:YLF

Year: 2007

Authors: Vannini M., Toci G., Alderighi D., Parisi D., Cornacchia F., Tonelli M.

Autors Affiliation: Istituto di Fisica Applicata Nello Carrara, Consiglio Nazianale delle Ricerche IFAC- CNR, Via Madonna del Piano 10, 50019 Sesto Fiorentino (FI), Italy; NEST, Dipartimento di Fisica, Università di Pisa, Largo B. Pontecorvo 31, 56127 Pisa, Italy

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.

Journal/Review: OPTICS EXPRESS

Volume: 15 (13)      Pages from: 7994  to: 8002

KeyWords: Doping (additives); Laser tuning; Light emission; Pumping (laser); Semiconductor lasers, Duty factor; Laser diode arrays; Slope efficiency, Continuous wave lasers
DOI: 10.1364/OE.15.007994

ImpactFactor: 3.709
Citations: 45
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