Low-repetition-rate, high-energy, twin-pulse, passively mode locked Yb3+-doped fiber laser

被引：17
|
作者：
Liu, Dongfeng [1 ,2 ]
Zhu, Xiaojun [1 ,2 ]
Wang, Chinhua [1 ,2 ]
Yu, Jianjun [1 ,2 ]
Hu, Danfeng [3 ]
机构：
[1] Soochow Univ, Inst Modern Opt Technol, Suzhou 215006, Jiangsu, Peoples R China
[2] Key Lab Adv Opt Mfg Jiangsu Prov, Suzhou 215006, Jiangsu, Peoples R China
[3] Soochow Univ, Dept Elect Engn, Suzhou 215006, Jiangsu, Peoples R China
来源：
APPLIED OPTICS | 2011年 / 50卷 / 04期
关键词：
NORMAL-DISPERSION; GIANT-CHIRP; SOLITON; LOCKING; REGIME;
D O I：
10.1364/AO.50.000484
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We report an all-normal-dispersion, low-repetition-rate, high-energy, twin-pulse, passively mode locked ytterbium-doped fiber laser. The mode-locking mechanism of the laser is based on nonlinear polarization evolution and strong pulse shaping with a cascade long-period fiber grating bandpass filtering in a highly chirped pulse. The laser generates a highly stable twin-pulse group with 248 ps and 296 ps duration simultaneously and maximum pulse energy of 26.8 nJ-each pulse at a 2.5445MHz repetition rate. Energy quantization is observed, which demonstrates the nonparabolic nature of these pulses. The laser can also work in third-harmonic mode locking with 17.8 nJ energy (at a repetition rate of 7.65MHz and pulse width of 780 ps). (C) 2011 Optical Society of America
引用
收藏
页码：484 / 491
页数：8
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