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Author：

Pei, Siqi (Pei, Siqi.) | Zhang, Tianyu (Zhang, Tianyu.) | Zhang, Kun (Zhang, Kun.) | Yang, Boyi (Yang, Boyi.) | Zhu, Yun (Zhu, Yun.) | Hu, Jiapeng (Hu, Jiapeng.) | Liu, Xuesheng (Liu, Xuesheng.) | Liu, Youqiang (Liu, Youqiang.) | Wang, Zhiyong (Wang, Zhiyong.)

Indexed by：

EI

Abstract：

To　obtain　high-purity　cylindrical　vector　beam　pulses，a　wavelength-switchable　passive　mode-locked　cylindrical　vector　beams　all-fiber　laser　is　proposed　and　constructed　based　on　a　symmetrical　two-mode　coupler.　First，the　refractive　index　matching　diameter　for　the　conversion　from　the　fundamental　mode　to　the　higher-order　mode　was　obtained　based　on　the　principles　of　fiber　optic　transmission.　The　influence　ex⁃　erted　by　the　structural　parameters　of　the　symmetrical　two-mode　coupler　on　mode　selection　and　coupling　characteristics　was　analyzed，employing　simulations　of　mode　coupling　theory　and　the　beam　propagation　method.　The　symmetrical　double-mode　coupler　was　fabricated　utilizing　the　fusion　tapering　method.　This　method　eliminates　the　complicated　pre-taper　process　commonly　employed　in　traditional　mode　selection　cou⁃　pler　production.　Finally，a　passive　mode-locked　all-fiber　laser，based　on　the　symmetrical　two-mode　cou⁃　pler，was　constructed.　This　laser　showcases　a　switchable　central　wavelength　of　1　039　nm　and　1　068　nm，pulse　repetition　interval　of　113.　8　ns，repetition　rate　of　8.　78　MHz，pulse　durations　of　660　ps/656　ps，and　maximum　output　average　power　of　5.　25　mW/5.　2　mW.　In　addition，it　achieves　a　mode　purity　of　over　97%　for　the　vector　beam　output.　The　conducted　experiments　validate　the　feasibility　of　the　symmetrical　two-mode　coupler　and　present　a　viable　solution　for　obtaining　high-purity　cylindrical　vector　beams　in　future　applications.　©　2023　Chinese　Academy　of　Sciences.　All　rights　reserved.

Keyword：

Fibers Beam propagation method Fiber lasers Vectors Mode-locked fiber lasers Pulse repetition rate Refractive index

Author Community：

  • [ 1 ] [Pei, Siqi]Beijing Engineering Research Center of Laser Technology, Beijing University of Technology, Beijing; 100124, China
  • [ 2 ] [Pei, Siqi]Key Laboratory of Trans-scale Laser Manufacturing Technology, Beijing University of Technology）, Ministry of Education, Beijing; 100124, China
  • [ 3 ] [Pei, Siqi]Institute of Advanced Technology on Semiconductor Optics & Electronics, Institute of Laser Engineering, Beijing University of Technology, Beijing; 100124, China
  • [ 4 ] [Zhang, Tianyu]Beijing Engineering Research Center of Laser Technology, Beijing University of Technology, Beijing; 100124, China
  • [ 5 ] [Zhang, Tianyu]Key Laboratory of Trans-scale Laser Manufacturing Technology, Beijing University of Technology）, Ministry of Education, Beijing; 100124, China
  • [ 6 ] [Zhang, Tianyu]Institute of Advanced Technology on Semiconductor Optics & Electronics, Institute of Laser Engineering, Beijing University of Technology, Beijing; 100124, China
  • [ 7 ] [Zhang, Kun]Science and Technology on Solid-state Laser Laboratory, No. 11th Research Institute of China Electronics Technology Group Corporation, Beijing; 100015, China
  • [ 8 ] [Yang, Boyi]Beijing Engineering Research Center of Laser Technology, Beijing University of Technology, Beijing; 100124, China
  • [ 9 ] [Yang, Boyi]Key Laboratory of Trans-scale Laser Manufacturing Technology, Beijing University of Technology）, Ministry of Education, Beijing; 100124, China
  • [ 10 ] [Yang, Boyi]Institute of Advanced Technology on Semiconductor Optics & Electronics, Institute of Laser Engineering, Beijing University of Technology, Beijing; 100124, China
  • [ 11 ] [Zhu, Yun]Beijing Engineering Research Center of Laser Technology, Beijing University of Technology, Beijing; 100124, China
  • [ 12 ] [Zhu, Yun]Key Laboratory of Trans-scale Laser Manufacturing Technology, Beijing University of Technology）, Ministry of Education, Beijing; 100124, China
  • [ 13 ] [Zhu, Yun]Institute of Advanced Technology on Semiconductor Optics & Electronics, Institute of Laser Engineering, Beijing University of Technology, Beijing; 100124, China
  • [ 14 ] [Hu, Jiapeng]Beijing Engineering Research Center of Laser Technology, Beijing University of Technology, Beijing; 100124, China
  • [ 15 ] [Hu, Jiapeng]Key Laboratory of Trans-scale Laser Manufacturing Technology, Beijing University of Technology）, Ministry of Education, Beijing; 100124, China
  • [ 16 ] [Hu, Jiapeng]Institute of Advanced Technology on Semiconductor Optics & Electronics, Institute of Laser Engineering, Beijing University of Technology, Beijing; 100124, China
  • [ 17 ] [Liu, Xuesheng]Beijing Engineering Research Center of Laser Technology, Beijing University of Technology, Beijing; 100124, China
  • [ 18 ] [Liu, Xuesheng]Key Laboratory of Trans-scale Laser Manufacturing Technology, Beijing University of Technology）, Ministry of Education, Beijing; 100124, China
  • [ 19 ] [Liu, Xuesheng]Institute of Advanced Technology on Semiconductor Optics & Electronics, Institute of Laser Engineering, Beijing University of Technology, Beijing; 100124, China
  • [ 20 ] [Liu, Youqiang]Beijing Engineering Research Center of Laser Technology, Beijing University of Technology, Beijing; 100124, China
  • [ 21 ] [Liu, Youqiang]Key Laboratory of Trans-scale Laser Manufacturing Technology, Beijing University of Technology）, Ministry of Education, Beijing; 100124, China
  • [ 22 ] [Liu, Youqiang]Institute of Advanced Technology on Semiconductor Optics & Electronics, Institute of Laser Engineering, Beijing University of Technology, Beijing; 100124, China
  • [ 23 ] [Wang, Zhiyong]Beijing Engineering Research Center of Laser Technology, Beijing University of Technology, Beijing; 100124, China
  • [ 24 ] [Wang, Zhiyong]Key Laboratory of Trans-scale Laser Manufacturing Technology, Beijing University of Technology）, Ministry of Education, Beijing; 100124, China
  • [ 25 ] [Wang, Zhiyong]Institute of Advanced Technology on Semiconductor Optics & Electronics, Institute of Laser Engineering, Beijing University of Technology, Beijing; 100124, China

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Source ：

Optics and Precision Engineering

ISSN： 1004-924X

Year： 2023

Issue： 23

Volume： 31

Page： 3395-3404

Cited Count：

WoS CC Cited Count： 0

SCOPUS Cited Count：

ESI Highly Cited Papers on the List： 0 Unfold All

WanFang Cited Count：

Chinese Cited Count：

30 Days PV： 4

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