二硫化钼掺镱光纤激光器连续和调Q实验研究  

The experimental research of continuous and Q-switched MoS2-SA Yb3+-doped fiber laser

作　　者：张凤娟[1] 黄敏 ZHANG Feng-juan;HUANG Min(School of Internet of Things Technology,Wuxi Professional College of Science and Technology,Wuxi 214028,China;Key Laboratory of Advanced Process Control for Light Industry (Ministry of Education),Jiangnan University,Wuxi 214122,China)

机构地区：[1]无锡科技职业学院物联网技术学院,江苏无锡214028 [2]江南大学轻工业过程先进控制教育部重点实验室,江苏无锡214122

出　　处：《激光与红外》2021年第2期178-183,共6页Laser & Infrared

基　　金：中央高校基本科研业务费专项资金资助项目(No.JUSRP51730A)资助。

摘　　要：采用环形腔结构,实现了1063 nm双包层掺镱光纤激光器的连续和调Q运转。光纤激光器连续输出结果表明,在输出透过率和泵浦功率固定时,存在最佳输出光纤长度。在3m最佳光纤长度时,得到平均输出功率270 mW,中心波长1063 nm、斜率效率为21.5%的连续激光输出。采用自制的二硫化钼(MoS2)作为可饱和吸收体(SA),实现了掺镱光纤激光器的稳定调Q运转。当泵浦功率在185~560 mW范围内变化时,实现了稳定的调Q脉冲输出,调Q脉冲最大平均输出功率为2.18 mW,相应的脉冲宽度最窄为45 ns,最大重复频率为61.7 kHz,相应的单脉冲能量为38 nJ。脉冲宽度、重复频率、平均输出功率与泵浦功率近似呈线性关系。在实验中还发现了不稳定的被动锁模序列,并给出了合理的理论解释。With ring cavity configuration,it was realized for the continuous and Q-switched function of 1063 nm double-clab Yb3+-doped fiber laser.The experimental results of continuous laser showed that the gain fiber has an optimal output fiber length with the pump power and transmissivity are fixed and laser power output biggest.With optimum output fiber length of 3 m the output power of 1063 nm laser was 270 mW and the corresponding slope efficiency was 21.5%.The stable passive Q-switching function of the fiber laser was realized by using MoS2 as a saturable absorber.When the pump power changed in the range of 185~560 mW,a stable Q-switched pulse output was obtained.The maximum average output power of 2.18 mW and corresponding pulse width of 45 ns was obtained,repetition rate of 61.7 kHz,single pulse energy of 38 nJ were obtained respectively.Furthermore,pulse width,average output power and repetition rate presented approximate linear relationship with incident pump power.An unstable passive mode-locked sequence was also found in the experiment and reasonable theoretical explanations were given.

关 键 词：二硫化钼 掺镱光纤 可饱和吸收体 被动调Q 

分 类 号：TN248.1[电子电信—物理电子学]