太阳光直接抽运固体激光器由于能量转换环节最少,有可能获得较高效率,在空间激光器和太阳能利用方面存在重要的应用前景。我们采用菲涅耳透镜汇聚太阳光直接抽运Nd∶YAG晶体获得了激光振荡。Nd∶YAG晶体基质硬度高,热导率好,容易产生高增益、低阈值的激光作用,同时在可见光和近 Direct-pumped solid-state lasers have the potential to achieve higher efficiencies due to the least amount of energy conversion and have important applications in space lasers and solar energy. We use the Fresnel lens convergent sunlight to directly pump the Nd: YAG crystal to obtain the laser oscillation. Nd: YAG crystal matrix high hardness, good thermal conductivity, easy to produce high gain, low threshold laser effect, at the same time in visible light and near