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

He Hua, Chao Zeng, Zhiwen He, Hua Lu, Yueqing Du, Dong Mao, Jianlin Zhao

科研成果: 期刊稿件文章同行评审

17 引用 (Scopus)

摘要

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.

源语言英语
页(从-至)725-735
页数11
期刊Nanophotonics
12
4
DOI
出版状态已出版 - 2 2月 2023

指纹

探究 'Plasmonic metafiber for all-fiber Q-switched cylindrical vector lasers' 的科研主题。它们共同构成独一无二的指纹。

引用此