Spatiotemporal mode-locked fiber laser based on dual-resonance coupling long-period fiber grating

被引：7

作者：

Xing, Dengke ^{[1
]}

Feng, Mao ^{[1
]}

Liu, Congcong ^{[1
]}

He, Jiangyong ^{[1
]}

Chang, Kun ^{[1
]}

LI, Jin ^{[1
]}

Wang, Pan ^{[1
]}

Liu, Yange ^{[1
]}

Wang, Zhiq ^{[1
]}

机构：

[1] Nankai Univ, Inst Modern Opt, Tianjin Key Lab Microscale Opt Informat Sci & Tech, Tianjin 300350, Peoples R China

来源：

OPTICS EXPRESS | 2023年 / 31卷 / 05期

基金：

中国国家自然科学基金;

关键词：

MULTIPLE-SOLITON; ROGUE WAVES; TURBULENCE; COLLISION; MOLECULES; DYNAMICS;

D O I：

10.1364/OE.481559

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Spatiotemporal mode-locked (STML) fiber lasers have become an excellent platform in nonlinear optics research due to the rich nonlinear evolution process. In order to overcome modal walk-off and realize phase locking of different transverse modes, it is usually crucial to reduce the modal group delay difference in the cavity. In this paper, we use long-period fiber grating (LPFG) to compensate the large modal dispersion and differential modal gain in the cavity, realizing the spatiotemporal mode-locking in step-index fibers cavity. The LPFG inscribed in few-mode fiber could induce strong mode coupling, which has wide operation bandwidth based on dual-resonance coupling mechanism. By using dispersive Fourier transform involved intermodal interference, we show that there is a stable phase difference between the transverse modes constituting the spatiotemporal soliton. These results would be beneficial for the study of spatiotemporal mode-locked fiber lasers. (c) 2023 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement

引用

页码：7134 / 7143

页数：10

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