Harmonic mode-locked fiber laser based on microfiber-assisted nonlinear multimode interference

被引：0
|
作者：
王仁严 [1 ]
金亮 [1 ]
王家柱 [1 ]
谢尚之 [1 ]
李晓晖 [1 ]
徐英添 [1 ]
张贺 [1 ]
赵鑫 [1 ]
马晓辉 [1 ]
机构：
[1] National Key Laboratory of High-power Semiconductor Lasers, Changchun University of Science and Technology
来源：
Chinese Optics Letters | 2022年 / 20卷 / 01期
基金：
中国国家自然科学基金;
关键词：
D O I：
暂无
中图分类号：
TN248 [激光器];
学科分类号：
0803 ; 080401 ; 080901 ;
摘要：
A novel harmonic mode-locked fiber laser based on nonlinear multimode interference(NL-MMI) in a microfiber-assisted ultrafast optical switch is proposed in this Letter.The microfiber-assisted ultrafast optical switch can be obtained by tapering the splicing point of the graded-index multimode fiber(GIMF) and single-mode fiber,which not only helps to shorten the self-imaging period in GIMF to relax the strict requirement of NL-MMI on the length of multimode fiber,but also improves the harmonic order.In the experiment,with the waist diameter of ～15 μm,the repetition rates of the fiber laser can be stably locked at 285 MHz,corresponding to the 16 th-order harmonic mode-locking,with the pulse duration of 1.52 ps.Our results provide novel insight into the design of a high-repetition-rate laser and the application of microfibers in the modelocking device.
引用
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页码：17 / 21
页数：5
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