Highly efficient continuous-wave laser operation of laser diode-pumped Nd,Y:CaF_2 crystals

• 作 者: 张倩 苏良碧 姜大朋 马凤凯 覃志鹏 谢国强 郑建刚 邓青华 郑万国 钱列加 徐军
• 机 构: Key Laboratory of Transparent and Opto-functional Inorganic Materials, Shanghai Institute of Ceramic
• 出 处: Chinese Optics Letters
• 发表日期: 2015年07期
• 关键词: pumped doping systematically FWHM lifetime bands spectroscopic Highly pumping co

The effect of co-doping Y3 tand the doping concentration of Nd3 ton the spectroscopic properties and laser performance of Nd:CaF2 crystals are investigated systematically. For a 0.5% Nd:CaF2 crystal, the emission lifetime at 1.06 μm increases from 18 to 361 μs by co-doping 10 at.% Y3 t, while the emission cross section increases to 4.27 × 10-20cm2 at 1054 nm. With a 10 at.% doping concentration of Y3 t, 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, 10% Y:CaF2 and 0.6% Nd, 10% Y:CaF2 crystals, with slope efficiencies over 30% and 27%, respectively, and a maximum output power up to 901 m W.

The effect of co-doping Y3 tand the doping concentration of Nd3 ton the spectroscopic properties and laser performance of laser performance of Nd: CaF2 crystals are investigated systematically. For a 0.5% Nd: CaF2 crystal, the emission lifetime at 1.06 μm increases from 18 to 361 μs By doping concentration of Y3t, Nd; Y: CaF2 crystals concentrate emission bands that peak by co-doping 10 at.% Y3 t while the emission cross section increases to 4.27 × 10-20 cm 2 at 1054 nm. 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, 10% Y: CaF2 and 0.6% Nd, 10% Y: CaF2 crystals, with Slope efficiencies over 30% and 27%, respectively, and a maximum output power up to 901 mW.