Chinese Optics Letters, 2015, 13 (7): 071402, Published Online: Sep. 14, 2018
Highly efficient continuous-wave laser operation of laser diode-pumped Nd,Y:CaF2 crystals
Abstract
The effect of co-doping Y 3 + and the doping concentration of Nd 3 + on the spectroscopic properties and laser performance of Nd : CaF 2 crystals are investigated systematically. For a 0.5% Nd : CaF 2 crystal, the emission lifetime at 1.06 μm increases from 18 to 361 μs by co-doping 10 at.% Y 3 + , while the emission cross section increases to 4.27 × 10 20 cm 2 at 1054 nm. With a 10 at.% doping concentration of Y 3 + , Nd , Y : CaF 2 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 : CaF 2 and 0.6% Nd, 10% Y : CaF 2 crystals, with slope efficiencies over 30% and 27%, respectively, and a maximum output power up to 901 mW.
Qian Zhang, Liangbi Su, Dapeng Jiang, Fengkai Ma, Zhipeng Qin, Guoqiang Xie, Jiangang Zheng, Qinghua Deng, Wanguo Zheng, Liejia Qian, Jun Xu. Highly efficient continuous-wave laser operation of laser diode-pumped Nd,Y:CaF2 crystals[J]. Chinese Optics Letters, 2015, 13(7): 071402.