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Yb~(3+)…KGd(WO4)2激光器是近年来得到广泛关注的新型固体激光光源,具有吸收和发射截面大、荧光谱线宽、激光阈值低等突出特点。对此三能级激光系统进行微观动力学理论分析,在探讨了不同的晶体切割方向、抽运光偏振方向和激光偏振方向的吸收和发射特性的基础上研究了Yb~(3+)…KGd(WO_4)_2激光器输出特性随晶体长度和输出耦合镜反射率的变化规律,得到了Yb~(3+)…KGd(WO_4)_2激光器的最佳构成条件,即:晶体切割方向平行于g轴,抽运光偏振方向平行于m轴,激光偏振方向平行于p轴。
Yb ~ (3+) ... KGd (WO4) 2 laser is a new type of solid-state laser light source that has drawn wide attention in recent years. It has the characteristics of large absorption and emission cross section, wide line of fluorescence spectrum and low laser threshold. The three-level laser system is analyzed by the theory of micro-dynamics. Based on the different crystal cutting direction, the polarization direction of the pump light and the absorption and emission characteristics of the laser polarization direction, the effects of Yb ~ (3+) ... KGd (WO_4) _2 laser output characteristics with the length of the crystal and the output coupling mirror reflectivity of the law of the Yb ~ (3+) ... KGd (WO_4) _2 laser best conditions, namely: the crystal cutting direction parallel to the g axis , The direction of polarization of the pump light is parallel to the m-axis and the polarization direction of the laser light is parallel to the p-axis.