中国激光, 2014, 41 (10): 1002004, 网络出版: 2014-08-12
百瓦级1030 nm皮秒脉冲掺镱全光纤激光器 下载: 648次
Hundred-Watt-Level 1030 nm Ytterbium-Doped Picosecond All-Fiber LaserSun Ruoyu
激光器 主振荡功率放大器 被动锁模 掺镱光纤 lasers master oscillator power amplifier passively mode-locked ytterbium-doped fiber
摘要
报道了1030 nm高功率被动锁模皮秒脉冲掺镱光纤激光器。该激光器为全光纤结构,采用主振荡功率放大(MOPA)技术,由皮秒种子源与三级掺镱光纤放大器组成。种子源使用半导体可饱和吸收镜(SESAM)进行被动锁模,输出脉冲中心波长为1030.4 nm、3 dB光谱宽度为0.15 nm、脉冲宽度为30.7 ps、重复频率为29.0 MHz、输出功率为30 mW。通过三级掺镱光纤放大器后,最终在30 μm/250 μm双包层掺镱光纤中实现了平均功率为101 W的皮秒脉冲激光输出, 3 dB光谱宽度为1.46 nm,脉冲宽度为36.6 ps,放大器斜率效率为76.7%,单脉冲能量为3.48 μJ,峰值功率为97 kW,光束质量M2=2.78。
Abstract
A high power 1030 nm passively mode-locked ytterbium-doped picosecond fiber laser by master oscillator power amplifier (MOPA) in all-fiber configuration is demonstrated. The laser system consists of the picosecond seed and three stages of ytterbium-doped all-fiber amplifiers. The seed is mode-locked by semiconductor saturable absorber mirror (SESAM). And a stable output is obtained with 30.7 ps pulse width, 29.0 MHz repetition rate, and 30 mW average output power. The laser operates at 1030.4 nm with a spectral width of 0.15 nm. After three stages of fiber amplification, the final output power is scaled up to 101 W in a 30 μm/250 μm double cladding ytterbium-doped fiber with the slope efficiency of 76.7%. The laser performance with the pulse width of 36.6 ps, pulse energy of 3.48 μJ, peak power as high as 97 kW operating at 1030.4 nm with bandwidth of 1.46 nm is achieved, and the beam quality M2 is 2.78.
孙若愚, 金东臣, 曹镱, 王璞. 百瓦级1030 nm皮秒脉冲掺镱全光纤激光器[J]. 中国激光, 2014, 41(10): 1002004. 孙若愚, 金东臣, 曹镱, 王璞. Hundred-Watt-Level 1030 nm Ytterbium-Doped Picosecond All-Fiber LaserSun Ruoyu[J]. Chinese Journal of Lasers, 2014, 41(10): 1002004.