摘要
The effect of co-doping Y3＋ and the doping concentration of Nd3＋ on the spectroscopic properties and laser performance of Nd：CaF2 crystals are investigated systematically. For a 0.5% Nd：CaF2 crystal, the emission life- time at 1.06 μm increases from 18 to 361 μs by co-doping 10 at.% Y3＋, while the emission cross section increases to 4.27 × 10^-20 cm2 at 1054 nm. With a 10 at.% doping concentration of Y3＋, Nd, Y：CaF2 crystals concentrate emission bands that peak at 1054 nm with shoulders at 1063 nm, and FWHM at about 30 nm. A diode-pumped, highly efficient laser operation is obtained with 0.5% Nd, 1070 Y：CaF2 and 0.6% Nd, 1070 Y：CaF2 crystals, with slope efficiencies over 30% and 27%, respectively, and a maximum output power up to 901 mW.
The effect of co-doping Y3＋ and the doping concentration of Nd3＋ on the spectroscopic properties and laser performance of Nd：CaF2 crystals are investigated systematically. For a 0.5% Nd：CaF2 crystal, the emission life- time at 1.06 μm increases from 18 to 361 μs by co-doping 10 at.% Y3＋, while the emission cross section increases to 4.27 × 10^-20 cm2 at 1054 nm. With a 10 at.% doping concentration of Y3＋, Nd, Y：CaF2 crystals concentrate emission bands that peak at 1054 nm with shoulders at 1063 nm, and FWHM at about 30 nm. A diode-pumped, highly efficient laser operation is obtained with 0.5% Nd, 1070 Y：CaF2 and 0.6% Nd, 1070 Y：CaF2 crystals, with slope efficiencies over 30% and 27%, respectively, and a maximum output power up to 901 mW.
基金
supported by the National Natural Science Foundation of China under Grant Nos.61178056,61422511,and 51432007
