Tunable High-Order Harmonic Mode-Locking in Yb-Doped Fiber Laser With All-Normal Dispersion

被引：28
作者：
Zhu, Xiaojun [1 ]
Wang, Chinhua [1 ]
Liu, Shixin [1 ]
Zhang, Guiju [1 ]
机构：
[1] Soochow Univ, Inst Modern Opt Technol, Key Lab Adv Opt Mfg Jiangsu Prov, Suzhou 215006, Peoples R China
来源：
IEEE PHOTONICS TECHNOLOGY LETTERS | 2012年 / 24卷 / 09期
关键词：
All-normal-dispersion; fiber laser; high-order harmonic mode-locked; long period grating;
D O I：
10.1109/LPT.2012.2188023
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：
A tunable high-order harmonic and passively mode-locked Yb-doped fiber laser with all-normal dispersion is demonstrated. Using the mode-locking mechanism of the nonlinear polarization evolution (NPE) effect and a cascade long period fiber grating (C-LPFG) as an all-fiber format spectral filter for the strong pulse shaping, a maximum of 14th-order harmonic mode-locked (HML) Yb-doped fiber laser can be tunably achieved with a repetition rate of 35.497 MHz compared with the fundamental repetition rate of 2.538 MHz, which is the highest harmonic mode-locked laser with all-normal dispersion so far. At the 14th HML output, the cavity supermodes are suppressed to 23 dB, and the pulses duration is 1.23 ns with a maximum pulse energy of 0.97 nJ.
引用
收藏
页码：754 / 756
页数：3
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