掺钕LaMgAlO晶体的生长、光谱特性及二极管泵浦激光运转

Growth, spectral properties, and diode-pumped laser operation of a Nd-doped LaMgAlO crystal.

作者信息

Pan Yuxin, Zhou Shidong, Wang Jiawei, Xu Bin, Liu Jian, Song Qingsong, Xu Jie, Li Dongzhen, Liu Peng, Xu Xiaodong, Xu Jun

出版信息

Appl Opt. 2018 Nov 10;57(32):9657-9661. doi: 10.1364/AO.57.009657.

DOI:10.1364/AO.57.009657

PMID:30461749

Abstract

A Nd-doped LaMgAlO (Nd:LMA) crystal was grown by the Czochralski method. Room temperature polarized absorption spectra, fluorescence spectra, and fluorescence lifetime of the Nd:LMA crystal were measured and analyzed. The Judd-Ofelt parameters Ω were calculated to be 1.21×10, 3.63×10, and 2.35×10 cm, respectively. The absorption and emission cross sections were calculated. Using a 790-nm diode laser as pump source, continuous-wave laser operation of an a-cut Nd:LMA crystal has been demonstrated with a maximum output power of 1.71 W and slope efficiency of 40.4% for a 1055 nm laser. Low-gain laser operation at 1082 nm is also realized with a maximum output power of 1.46 W and slope efficiency of 34.5%.

摘要

采用提拉法生长了掺钕的镧镁铝酸盐（Nd:LMA）晶体。测量并分析了Nd:LMA晶体的室温偏振吸收光谱、荧光光谱和荧光寿命。计算得到的Judd-Ofelt参数Ω分别为1.21×10、3.63×10和2.35×10 cm。计算了吸收和发射截面。以790 nm二极管激光器作为泵浦源，实现了a切割Nd:LMA晶体的连续波激光运转，对于1055 nm激光，最大输出功率为1.71 W，斜率效率为40.4%。在1082 nm处也实现了低增益激光运转，最大输出功率为1.46 W，斜率效率为34.5%。