147 fs碳纳米管倏逝场锁模全光纤掺铒光纤激光器  

A 147 fs mode-locked erbium-doped fiber laser with a carbon nanotubes saturable absorber in evanescent field

作　　者：董信征[1] 于振华[1] 田金荣[1] 李彦林[1] 窦志远[1] 胡梦婷[1] 宋晏蓉[1] 

机构地区：[1]北京工业大学微纳信息光子技术研究所,应用数理学院,北京100124

出　　处：《物理学报》2014年第3期131-135,共5页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:61177047);国家自然科学基金重点项目(批准号:61235010)资助的课题~~

摘　　要：利用化学腐蚀法在光纤包层表面成功制备了调制深度为3.9%的单壁碳纳米管饱和吸收体.组建了环形腔结构的全光纤掺铒光纤激光器,以制备的单壁碳纳米管薄膜为锁模元件,利用倏逝场锁模实现了锁模输出.锁模脉冲的中心波长为1556 nm,3 dB光谱带宽为24 nm,脉冲宽度为147 fs,重复频率为150 MHz.在520mW抽运功率下,平均输出功率为21 mW,相应的单脉冲能量为0.14 nJ.A saturable absorber of 3.9% modulation depth was prepared on the surface of a fiber clad with single-walled carbon nanotubes （SWCNT） using chemical corrosion method. An all-fiber Er-doped fiber laser was setup with a ring cavity, and was mode-locked successfully by evanescent field mode-locking using prepared saturable absorber of single-walled carbon nanotubes. A 147 fs mode-locking pulse is obtained near 1556 nm with a 3 dB bandwidth of 24 nm. The output power is 21 mW at a pump power of 520 mW, corresponding to a pulse energy of 0.14 nJ with a repetition rate of 150 MHz.

关 键 词：掺铒光纤 全光纤激光器 单壁碳纳米管 倏逝场 

分 类 号：TN248[电子电信—物理电子学]