Raman fiber laser harmonically mode-locked by exploiting the intermodal beating of CW multimode pump source

被引：21
|
作者：
Luo, Z. Q. [1 ]
Ye, C. C. [1 ]
Fu, H. Y. [1 ]
Cheng, H. H. [1 ]
Wang, J. Z. [1 ]
Cai, Z. P. [1 ]
机构：
[1] Xiamen Univ, Dept Elect Engn, Xiamen 361005, Peoples R China
来源：
OPTICS EXPRESS | 2012年 / 20卷 / 18期
关键词：
SEMICONDUCTOR DISK LASER; PULSE-PROPAGATION; RING LASER; LOCKING; GENERATION; DISPERSION; NANOTUBES;
D O I：
10.1364/OE.20.019905
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We report here the first demonstration of a harmonic mode-locked Raman fiber laser using the intermodal beating of a continuous-wave (CW) multiple-longitudinal-mode pump laser. By matching the Raman-cavity round-trip frequency with the intermodal-beating one of a 1064 nm CW pump source, harmonic mode-locking in phosphosilicate Raman fiber laser is stably initiated at the first-order Stokes of 1239.5 nm, and generates rectangular-shape nanosecond pulses with the pulse energy up to 4.25 nJ. Using the new type of mode-locking, the harmonic order can be discretely tuned from 78th-to 693rd-order, and the cavity supermode is suppressed up to 51.1 dB with the signal-to-noise ratio of more than 65 dB. (C) 2012 Optical Society of America
引用
收藏
页码：19905 / 19911
页数：7
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