High-power erbium-doped fiber laser with a carbon nanotubes-doped sol-gel glass mode-locker

被引:10
作者
Chen, Zhendong [1 ]
Wang, Yonggang [1 ]
Lv, Ruidong [1 ]
Liu, Sicong [1 ]
Wang, Jiang [1 ]
Wang, Yishan [2 ]
机构
[1] Shaanxi Normal Univ, Sch Phys & Informat Technol, Xian 710062, Peoples R China
[2] Chinese Acad Sci, Xian Inst Opt & Precis Mech, State Key Lab Transient Opt & Photon, Xian 710119, Peoples R China
关键词
Erbium-doped fiber laser; Saturable absorber; Carbon nanotube; EVANESCENT FIELD INTERACTION; MU-M; SATURABLE ABSORBERS; FEMTOSECOND LASER; PULSE GENERATION; SOLITON LASER; GRAPHENE; DEPOSITION; LOCKING;
D O I
10.1016/j.yofte.2020.102189
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Generally, broadband absorbers has much non-saturable loss and low laser damage threshold, which limits the average output power of the fiber lasers mode locked by broadband absorbers. Exceptions are the absorbers in evanescent wave mode locking, in which way only weak laser passes through the absorber section. However, evanescent wave mode locking method needs to change the original structure of the fiber. Most of the commercial fiber-lasers adopt face-to-face passive mode-locking. Therefore, it is important to increase the damage threshold of the broadband absorbers. In this study, for the first time, a single-walled carbon nanotube (SWNT)-doped sol-gel glass composite absorber is fabricated using a low-temperature sol-gel method. The main component of the sol-gel glass is compact amorphous inorganic silicon-dioxide, which has high laser-damage threshold. The SWNT-doped sol-gel glass is integrated into the erbium-doped fiber (EDF) laser and mode-locking occurs at 1559 nm. The shortest pulse duration is 456 fs, and the maximum average output power is 110.65 mW. Compared to most EDF lasers based on broadband absorbers, the average output power is one of the highest values. The results indicate that encapsulating absorber in the inorganic sol-gel matrix is a promising method for fabricating high power ultrafast fiber laser type absorbers.
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页数:8
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