High-Efficiency High-Mode-Purity Cylindrical Vector Beam Based on Ring-Core Yb-Doped Fiber

被引：0
作者：
Liu, Dandan [1 ,2 ]
Chen, Wei [1 ,2 ]
Wang, Fei [1 ,2 ]
Peng, Jianao [1 ,2 ]
Zeng, Xianglong [1 ,2 ]
Xu, Lixin [3 ]
Wen, Jianxiang [1 ,2 ]
Zhang, Xiaobei [1 ,2 ]
Pang, Fufei [1 ,2 ]
Wang, Tingyun [1 ,2 ]
机构：
[1] Shanghai Univ, Inst Fiber Opt, Shanghai 200444, Peoples R China
[2] Shanghai Univ, Key Lab Specialty Fiber Opt & Opt Access Networks, Joint Int Res Lab Specialty Fiber Opt & Adv Commun, Shanghai 200244, Peoples R China
[3] Univ Sci & Technol China, Dept Opt & Opt Engn, Hefei 230026, Peoples R China
来源：
IEEE PHOTONICS TECHNOLOGY LETTERS | 2025年 / 37卷 / 04期
基金：
中国国家自然科学基金;
关键词：
Optical fiber polarization; Fiber lasers; Laser modes; Optical fiber devices; Optical fibers; Laser beams; Oscillators; Claddings; Vectors; Refractive index; Ring-core Yb-doped fiber; cylindrical vector beams; few-mode fiber Bragg grating; EVANESCENT BESSEL BEAM; FAR-FIELD; LASER; GENERATION;
D O I：
10.1109/LPT.2025.3528345
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：
We propose and fabricate a novel ring-core Ytterbium-doped fiber (RCYDF) with a depressed inner core. The experiment demonstrates that the fiber could effectively increase the mode competitiveness of the LP11 mode while attenuating the fundamental (LP01) mode. Meanwhile, we propose the overlap factor ratio (OFR) to characterize the mode competitiveness of the high-order core (LP11) mode. Based on this fiber, the cylindrical vector beams (CVBs) are generated at 1062.34 nm with a high efficiency of 63.35%. The output of radially polarized (TM01) and azimuthally polarized (TE01) beams are achieved with high-mode-purity of 94.7% and 93.2%, respectively. The CVB fiber laser has great potential application in surface plasmon excitation and laser material processing.
引用
收藏
页码：187 / 190
页数：4
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