Direct Comparison of Yb3+:CaF2 and heavily doped Yb3+:YLF as laser media at room temperature

Year: 2009

Authors: Pirri A., Alderighi D., Toci G., Vannini M., Nikl M., Sato H.

Autors Affiliation: Istituto di Fisica Applicata Nello Carrara, Consiglio Nazionale Delle Ricerche IFAC-CNR, Via Madonna del Piano 10C, 50019 Sesto Fiorentino (FI), Italy; Institute of Physics Academy of Sciences of the Czech Republic, Cukrovarnicka 10, Prague 162 53, Czech Republic; Fukuda Crystal Laboratory Ltd, 6-6-3 Minami-Yoshinari, Aoba-ku, Sendai 989-3204, Japan

Abstract: We report an extensive comparison of the laser performances of diode-pumped Yb3+:YLF (30% at.) and Yb3+:CaF2 (5% at.) crystals, lasing at room-temperature and operating in two different operation mode, i.e. Continuous Wave (CW) and quasi-CW. An in-depth investigation of the crystals behavior by changing the pump power, clearly shows the crystal absorption depends on the lasing conditions. Therefore, we report an unambiguous definition of the slope efficiency calculated taken into account the real measured crystal absorption under laser action. Finally, we present a study of problems related to thermally induced losses which are expected influencing the laser performance.

Journal/Review: OPTICS EXPRESS

Volume: 17 (20)      Pages from: 18312  to: 18319

More Information: This research was supported by the joint project of ASCR and CNR and CZech GA AV project M100100910.
KeyWords: YLF lasers; Ytterbium, Continuous waves; Crystal absorption; Heavily doped; Laser performance; Lasing conditions; Operation mode; Slope efficiencies; Thermally induced, Pumping (laser), article; comparative study; computer aided design; equipment; equipment design; evaluation; reproducibility; sensitivity and specificity; solid state laser; temperature, Computer-Aided Design; Equipment Design; Equipment Failure Analysis; Lasers, Solid-State; Reproducibility of Results; Sensitivity and Specificity; Temperature
DOI: 10.1364/OE.17.018312

Citations: 31
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