Laser performance of diode-pumped Nd, Y-codoped CaF 2–SrF 2 mixed crystal
Laser performance of diode-pumped Nd, Y-codoped CaF 2–SrF 2 mixed crystal
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DOI：
10.1088/1054-660x/24/3/035802
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发表时间：
2014-03
期刊：
影响因子：
1.2
通讯作者：
J. Liu;M. Fan;L. Su;D. Jiang;F. Ma;Q. Zhang;J. Xu
中科院分区：
文献类型：
--
作者：
J. Liu;M. Fan;L. Su;D. Jiang;F. Ma;Q. Zhang;J. Xu
采用温度梯度法（TGT）制备了Nd，Y共掺CaF 2-SrF 2无序混晶。在室温下测量了晶体的吸收光谱和荧光光谱。在1056 nm波长处实现了连续波（CW）和调Q激光运转，输出功率为0.65at.% Nd，10原子%钇共掺晶体，为首次发现。在紧凑的线性腔中获得了724 mW的连续输出功率。报道了基于Cr ~（4+）：YAG可饱和吸收体的Nd，Y：CaF_2-SrF_2激光晶体在折叠腔中的调Q脉冲特性。当Cr 4+：YAG晶体的初始透过率为90%时，获得了最短脉宽110 ns，最大峰值功率383 W的激光输出。实验还研究了泵浦功率对工作参数的影响。
A disordered Nd, Y-codoped CaF2–SrF2 mixed crystal was obtained by the temperature gradient technique (TGT). The absorption and fluorescence spectra of the crystal were measured at room temperature. Diode-pumped continuous-wave (CW) and Q-switched laser operations were demonstrated at 1056 nm with a 0.65 at.% Nd, 10 at.% Y-codoped crystal, for the first time to our knowledge. The CW output power of 724 mW was obtained in a compact linear cavity. Also the Q-switched pulse characteristics of Nd, Y:CaF2–SrF2 laser crystal were reported based on Cr4+:YAG saturable absorbers in a folded cavity. The shortest pulse width of 110 ns and the highest peak power of 383 W were obtained when the initial transmission of the Cr4+:YAG crystals was 90%. The dependence of the operational parameters on the pump power was also investigated experimentally.