Plasmonic metafiber for all-fiber Q -switched cylindrical vector lasers

Abstract: Metafibers, by integrating metasurface at the optical fiber tip, are emerging as the significant optical coupling platforms for nanophotonics and fiber-optic communities. Here, we propose a plasmonic metafiber for converting the fundamental mode to first-order mode in fiber, and as proof of device performance, demonstrate an all-fiber Q-switched cylindrical vector laser using the metafiber. Based on polarization-dependent plasmonic resonance, a polarization-independent mode conversion metasurface is designed theoretically and numerically, fabricated directly on fiber facet, and packaged as an all-fiber component with efficiency up to 21% at 1550-nm band. Using the metafiber in an all-fiber laser, Q-switched azimuthally polarized beam (APB) and radially polarized beam (RPB) are delivered at wavelength of 1548.5 nm with pulse durations from ∼7 to ∼2 μs when pump power increases from 30 to 120 mW. The mode purities of the APB and RPB are 86.5% and 90.7%, respectively. This work outlines a new strategy to integrate metasurfaces into “all-in-fiber” systems and offers a reliable route to construct next-generation laser sources, such as all-fiber ultrafast structured lasers.

Object Details

• Location: Deutsche Nationalbibliothek Frankfurt am Main
• Extent: Online-Ressource
• Language: Englisch

References and Relationships

• Bibliographic citation: Plasmonic metafiber for all-fiber Q -switched cylindrical vector lasers ; volume:12 ; number:4 ; year:2023 ; pages:725-735 ; extent:10 ; Nanophotonics ; 12, Heft 4 (2023), 725-735 (gesamt 10)

Contributors, Places and Time

• Creator: Hua, He ; Zeng, Chao ; He, Zhiwen ; Lu, Hua ; Du, Yueqing ; Mao, Dong ; Zhao, Jianlin

Further information

• DOI: 10.1515/nanoph-2022-0696
• URN: urn:nbn:de:101:1-2023022213031945653562
• Rights: Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
• Last update: 14.08.2025, 10:47 AM CEST