高亮度抽运源和有效的热管理方案是实现高功率光纤激光输出的关键。受限于目前高亮度激光二极管的制造工艺水平,由激光二极管直接抽运的掺镱光纤激光器输出功率一直停留在千瓦级水平。采用1018nm光纤激光对掺镱光纤进行同带抽运,可在提高抽运源亮度的同时降低掺镱光纤内的热负荷,被公认为是进一步提升掺镱光纤激光器输出功 High-brightness pumping sources and efficient thermal management solutions are the key to high-power fiber laser output. Due to the current manufacturing process of high-brightness laser diodes, the output power of the ytterbium-doped fiber laser directly pumped by the laser diode stays at the kilowatt level. Using 1018nm fiber laser to pump the Ytterbium-doped optical fiber in the same band can reduce the heat load in the Ytterbium-doped optical fiber while improving the brightness of the pumping source, which is considered to further improve the output power of the Ytterbium-doped fiber laser,