We demonstrate the theory and experiments of a power-ratio tunable dual-wavelength laser with coaxial diode end-pumping configuration by varying the pump wavelength, which is realized by controlling the working temperature of the pump laser diode (LD). Composite laser gain media containing an Nd : YVO4 crystal and an Nd : GdVO4 crystal was used for example. The dynamics of the dual-wavelength laser generation based on practical input operating parameters were simulated, and in the experiment, a total power of 3.72 W was obtained under the maximum LD pump power of 8 W, corresponding to the optical–optical conversion efficiency of 46.5%. The characteristics of the power-ratio tuning and output power agreed well with the theoretical predictions.

中文翻译：

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改变泵浦波长的功率比可调双波长Nd:YVO4/Nd:GdVO4激光器的理论与实验

我们通过改变泵浦波长来演示具有同轴二极管端泵浦配置的功率比可调谐双波长激光器的理论和实验，这是通过控制泵浦激光二极管 (LD) 的工作温度来实现的。例如，使用包含 Nd:YVO4 晶体和 Nd:GdVO4 晶体的复合激光增益介质。模拟了基于实际输入操作参数的双波长激光产生的动力学，在实验中，在 8 W 的最大 LD 泵浦功率下获得了 3.72 W 的总功率，对应的光-光转换效率为46.5%。功率比调谐和输出功率的特性与理论预测非常吻合。