基于大模面积掺Yb光纤的100W种子光主振荡器功率放大技术

演示了一种基于大模面积掺Yb3+离子的全光纤放大器系统，该系统采用975 nm泵浦。系统是利用泵浦与Yb3+离子有源光纤相互作用产生信号源，光源为半导体激光放大的单频种子。通过优化系统，合理设计搭建光学器件，控制光束逆传输，减少非线性光学的干扰。100 W信号源作用于系统上，采用多级掺镱光放大的主振荡器功率放大器（MOPA），最大输出3.2 kW连续激光。平均光-光转化效率为78.26%。光束质量Mx21.657，My21.735。输出稳定性小于2%。系统连续信号放大输出光具有广泛的应用范围。掺Yb3+离子的全光纤放大主要用于激光检测、工业测量技术研究等领域。

100 W seeds light master oscillator power amplifier based on the large mode area of ytterbium-doped all-fiber optic technology

A all fiber amplifier system was demonstrated based on large modulus area doped with Yb3+ ions, which used a 975 nm pump. The system used the interaction between the pump and Yb3+ ion active fiber to generate a signal source. Signal source was semiconductor laser amplified single-frequency seed light. The system was optimized, optical devices were reasonably designed and built, and the beam inverse transmission was controled to reduce the nonlinear optical interference. 100 W signal source acted on the system, the master oscillator power amplifier(MOPA) of multistage Yb3+ doped optical amplifier was adopted, the signal output 3.2 kW continuous laser. The average optical-to-optical conversion efficiency was about 78.26%. Output beam quality Mx21.657, My21.735. Output stability was less than 2%. The system continuous signal amplification output beam had a wide range of applications. The ytterbium doped ions all-fiber amplifier is mainly used in laser detection, industry measurement technology research, etc.