1μm波段宽带可调谐锁模光纤激光器  

Widely Tunable Mode-Locked Fiber Laser Operating in 1 μm Wavelength Range

作　　者：苟斗斗[1] 杨四刚[1] 尹飞飞[2] 张磊[1] 邢芳俭[1] 陈宏伟[1] 陈明华[1] 谢世钟[1] 

机构地区：[1]清华大学电子工程系信息科学与技术国家实验室,北京100084 [2]北京邮电大学电子工程学院信息光子学与光通信国家重点实验室,北京100876

出　　处：《光学学报》2013年第7期71-75,共5页Acta Optica Sinica

基　　金：国家973计划(2010CB327606);国家自然科学基金(61108007);集成光电子学国家重点联合实验室开放基金

摘　　要：报道了一种工作于1μm波段、正常色散区、基于半导体可饱和吸收镜(SESAM)的被动锁模光纤激光器。激光器以高掺杂Yb光纤为增益物质,结合可调谐滤波器,形成环形腔结构。采用976nm半导体激光器抽运,当抽运功率大于16dBm时,激光器可实现1033～1069nm波长范围内重复频率为25.4MHz的宽带可调谐输出,性能稳定,在调谐范围内均可观测到非常规则的矩形输出光谱。在固定抽运功率下,对调谐范围内输出功率、光谱带宽、时域脉宽进行了实验测量和分析。在波长为1064nm时,用单通道光栅对将谱宽为1.745nm、时域脉宽为34.85ps的脉冲压缩至15.45ps。Based on a semiconductor saturable absorber mirror （SESAM）, an all-normal-dispersion ring cavity, tunable, ytterbium-doped passively mode-locked fiber ring laser is reported. Pumped by a 976 nm semiconductor laser, when the pumping power is more than 16 dBm, the fiber laser can realize tunnable output from 1033 nm to 1069 nrn smoothly at a repetition rate of 25. 4 MHz, and a regularly rectangular spectrum is produced. The dependence of output power, bandwidth, and domain pulse-width on wavelength is analyzed in detail at a fixed pumping power. The experimental setup is compact and self-started. In addition, the output pulse, with a spectrum width of 1. 745 nm and time domain width of 34.85 ps at 1064 nm, is compressed to 15.45 ps by using single-channel grating pairs.

关 键 词：光纤光学 光纤激光器 半导体可饱和吸收镜 可调谐 正色散 环形腔 脉冲压缩 

分 类 号：TN248.1[电子电信—物理电子学]