百瓦级1030nm皮秒脉冲掺镱全光纤激光器  

Hundred-Watt-Level 1030nm Ytterbium-Doped Picosecond All-Fiber Laser

作　　者：孙若愚[1] 金东臣 曹镱[1] 王璞[1] 

机构地区：[1]北京工业大学激光工程研究院国家产学研激光技术中心,北京100124

出　　处：《中国激光》2014年第10期21-26,共6页Chinese Journal of Lasers

基　　金：国家自然科学基金重点项目(61235010);国家自然科学基金面上项目(61177048);北京市自然科学基金B类重点项目(KZ2011100050011)

摘　　要：报道了1030nm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1030.4nm、3dB光谱宽度为0.15nm、脉冲宽度为30.7ps、重复频率为29.0MHz、输出功率为30mW。通过三级掺镱光纤放大器后,最终在30μm/250μm双包层掺镱光纤中实现了平均功率为101W的皮秒脉冲激光输出,3dB光谱宽度为1.46nm,脉冲宽度为36.6ps,放大器斜率效率为76.7%,单脉冲能量为3.48μJ,峰值功率为97kW,光束质量M2=2.78。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,29.0MHz 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 30μm/250μm 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 3.48μJ,peak power as high as 97 kW operating at 1030.4 nm with bandwidth of 1.46 nm is achieved,and the beam quality M^2 is 2.78.

关 键 词：激光器 主振荡功率放大器 被动锁模 掺镱光纤 

分 类 号：TN248[电子电信—物理电子学]