输出平均功率大于2W的高功率、包层抽运、超短脉冲铒镱共掺光纤激光器

采用主振荡功率放大的方式，研制成功集宽带波长连续可调谐、带宽内输出功率谱均衡、高重复频率和高功率性能于一体的超短脉冲包层抽运铒镱共掺光纤激光器.将优化主振荡器和功率放大器的腔结构与掺铒光纤的饱和增益特性结合起来，实现了1535nm—1570nm(35nm带宽)的输出功率均衡的波长连续可调谐激光输出，在带宽内激光功率的最大波动仅为0.5dBm；带宽内平均输出功率大于2W、脉冲重复频率大于10GHz、脉冲宽度小于30ps.该激光器具有综合性能指标先进、结构简单、全光纤化、使用方便等优点.关键词：光纤激光器包层抽运短脉冲高重复频率

Clad-pumped Er3+/Yb3+-codoped short pulse fiber laser with high average power output exceeding 2W

A clad-pumped short pulse Er³⁺/Yb³⁺-codoped fiber laser based on master oscillator and power amplifier (MOPA) structure, integrating the performances of broad-band tunable wavelength, uniform output power spectrum, high repetition rate and high average power to together, is proposed and demonstrated. Combining the cavity parameter optimization of the fiber master oscillator and power fiber amplifier with gain saturation characteristic of erbium-doped fiber, we achieved a lasing output with uniform output power and continuously tunable wavelength in the range from 1535 to 1530nm (i.e. 35nm band width). The maximum output power fluctuation is no more than 0.5 dBm, the average power is about 2 W, pulse repetition rate is greater than 10 GHz and pulse width is less than 30 ps in the whole tunable wavelength band width. Furthermore, the laser has advantages of good performance, simple all-fiber structure and convenient operation.