Hybrid-level Fresnel zone plate for diffraction efficiency enhancement
, 2017 The Fresnel Zone Plate (FZP) is widely used in a variety of applications. However, the most concerning drawback of the FZP is its low diffraction efficiency limited by fabrication capability.
Zhiyu Zhang +9 more
semanticscholar +1 more source
Tight focusing of laser light using a chromium Fresnel zone plate.
Optics Express, 2017 Using near-field scanning microscopy, we demonstrate that a 15-µm zone plate fabricated in a 70-nm chromium film sputtered on a glass substrate and having a focal length and outermost zone's width equal to the incident wavelength λ = 532 nm, focuses a ...
V. Kotlyar +5 more
semanticscholar +1 more source
Dual-band and dual-polarized reflective Fresnel zone plate design based on Fractal shape. [PDF]
Sci Rep, 2023 Wei L +6 more
europepmc +1 more source
Generation of a Focused THz Vortex Beam from a Spintronic THz Emitter with a Helical Fresnel Zone Plate. [PDF]
Nanomaterials (Basel), 2023 Zhang X +5 more
europepmc +1 more source
An Annular Fresnel Zone Plate without Central Spots Fabricated by Femtosecond Laser Direct Writing. [PDF]
Micromachines (Basel), 2022 Sun X, Zhou F, Duan L.
europepmc +1 more source
Experimental investigation of a near-field focusing performance of the IP-Dip polymer based 2D and 3D Fresnel zone plate geometries fabricated using 3D laser lithography coated with hyperbolic dispersion surface layered metamaterial. [PDF]
Nanophotonics, 2023 Micek P +5 more
europepmc +1 more source
Phase-Type Fresnel Zone Plate with Multi-Wavelength Imaging Embedded in Fluoroaluminate Glass Fabricated via Ultraviolet Femtosecond Laser Lithography. [PDF]
Micromachines (Basel), 2021 Li Q, Dai X, Shi H, Liu Y, Zhang L.
europepmc +1 more source
Graphene nanoribbon based plasmonic Fresnel zone plate lenses
, 2017 A graphene-based metamaterial lens is theoretically proposed by combining plasmonic nanoribbons with Fresnel Zone Plate (FZP) architecture to realize wavelength-selective and tunable lensing.
Sunan Deng +7 more
semanticscholar +1 more source
Reference Phase of Fresnel Zone Plates
, 2003 The standard zone plate assumes that the shortest ray connecting a radiation source and a detection point has a phase of 0 deg thereby defining a reference phase. Here we examine the experimental consequences of varying this reference phase from 0 deg to 360 deg. It is concluded that reference phase is an intrinsic and useful property of zone plates.
openaire +2 more sources
Application of Fresnel Zone Plate Focused Beam to Optimized Sensor Design for Pulse-Echo Harmonic Generation Measurements. [PDF]
Sensors (Basel), 2019 Jeong H, Shin H, Zhang S, Li X, Cho S.
europepmc +1 more source