摘要
搭建了一台基于双包层掺镱光纤的全光纤结构1 091 nm主振荡功率放大(MOPA)激光器。种子源为自行搭建的线形驻波腔掺镱光纤振荡器,最大输出功率为56 mW,放大的自发辐射(ASE)抑制比大于35dB。通过两级预放结构放大后,种子功率达到3 W。主放级为一个大模场双包层掺镱光纤放大器,最大输出功率达到41.6 W,斜率效率为75%。由于种子源利用窄带高反光纤光栅进行选频,输出光3 dB线宽小于0.1 nm。经过光谱仪测试,输出光中无明显的剩余抽运光成分,ASE抑制比大于22 dB。
An all-fiber 1 091 nm laser based on dual-clad ytterbium-doped fiber was constructed in master oscillator power amplifier（MOPA） configuration. The in-house-built seed source was an ytterbium- doped fiber oscillator employing a linear resonant cavity. The maximal output power of the seed laser was 56 mW and the amplified spontaneous emission （ASE） was suppressed by a factor of 35 dB. The seed power was boosted to 3 W by a two-stage pre-amplifier. The main amplification stage was a large mode-field area （LMA） ytterbium-doped double clad amplifier with 41.6 W maximal output power and 75% slope efficiency. The 3 dB linewidth of output light was narrower than 0.1 nm for the using of narrow- bandwidth high-reflectivity fiber grating. No residual pump light was observed by spectrometer, and the ASE was suppressed by over 22 dB.
出处
《红外与激光工程》
EI
CSCD
北大核心
2011年第11期2143-2146,共4页
Infrared and Laser Engineering
基金
国家自然科学基金(61077076
61007037
10904173
11004247)
教育部新世纪优秀人才支持计划(NCET-08-142)
