As a bridge between crystal and fiber, the single crystal fiber (SCF) can combine the advantages of the two materials and show great potential in high-power lasers. In this paper, we select a Nd:YAG SCF as the gain medium in a diode-end-pumped linear cavity. The Nd:YAG SCF with the dimensions of ∅ = 1 mm × 50 mm was manufactured using the micro-pulling-down technique. At an incident pump power of 153.0 W, the maximum output power of the 1064 nm laser was 72.3 W. To the best of our knowledge, this is the highest power obtained in Nd:YAG SCF lasers. In addition, using a second-type phase-matched KTP crystal, the 10 W continuous wave green laser was obtained with an intracavity double-frequency structure.

中文翻译：

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72.3 W 1064 nm Nd：YAG单晶光纤激光器和腔内双频产生

作为晶体和光纤之间的桥梁，单晶纤维（SCF）可以结合两种材料的优点，并在高功率激光器中显示出巨大的潜力。在本文中，我们选择Nd：YAG SCF作为二极管端泵浦线性腔中的增益介质。Nd：YAG SCF的尺寸为∅= 1 mm×50 mm，是使用微拉技术制造的。在153.0 W的入射泵浦功率下，1064 nm激光器的最大输出功率为72.3W。据我们所知，这是Nd：YAG SCF激光器获得的最高功率。另外，使用第二类型的相位匹配的KTP晶体，获得具有腔内双频结构的10W连续波绿色激光器。