A simple, compact, double-pass pumped Nd:YVO4 thin disk laser is demonstrated. Its continuous-wave performance with different Nd doping concentrations and thicknesses is investigated experimentally. The maximum output power of 17.7 W is achieved by employing a 0.5 at.% doped sample, corresponding to an optical-to-optical efficiency of 46% with respect to the absorbed pump power. In addition, a numerical analysis and an experimental study of the temperature distribution, and thermal lens effect of the Nd:YVO4 thin disk, are presented considering the influence of the energy transfer upconversion effect and the temperature dependence of the thermal conductivity tensor. The simulated results are in good agreement with the experimental results.

中文翻译：

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双通泵浦Nd:YVO4薄盘激光器的高功率运行

一种简单、紧凑的双程泵浦 Nd:YVO4演示了薄盘激光器。实验研究了其在不同Nd掺杂浓度和厚度下的连续波性能。17.7 W 的最大输出功率是通过采用 0.5 at.% 的掺杂样品实现的，对应于吸收泵浦功率的 46% 的光对光效率。此外，Nd:YVO 的温度分布和热透镜效应的数值分析和实验研究4考虑到能量转移上转换效应和热导张量的温度依赖性的影响，提出了薄盘。模拟结果与实验结果吻合较好。