Polarization-Independent Focusing Vortex Beam Generation Based on Ultra-Thin Spiral Diffractive Lens on Fiber End-Facet

Polarization-Independent Focusing Vortex Beam Generation Based on Ultra-Thin Spiral Diffractive Lens on Fiber End-Facet

An ultra-thin spiral diffractive lens (SDL) was fabricated by using focused ion beam milling on a fiber end-facet coated with a 100 nm thick Au film. Focusing vortex beams (FVBs) were successfully excited by the SDLs due to the coherent superposition of diffracted waves and their azimuth dependence...

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Bibliographic Details
Main Authors: Luping Wu, Zhiyong Bai, Rui Liu, Yuji Wang, Jian Yu, Jianjun Ran, Zikai Chen, Zilun Luo, Changrui Liao, Ying Wang, Jun He, George Y. Chen, Yiping Wang
Format: Article
Language:English
Published: MDPI AG 2024-12-01
Series:Photonics
Subjects:
vortex beam
fiber
diffractive lens
focused ion beam
Online Access:https://www.mdpi.com/2304-6732/11/12/1167
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