Single-focus binary Fresnel zone plate [PDF]
Optics & Laser Technology, 2017 In this work, we propose and analyze a novel kind of binary Fresnel zone plate with single focus. It consists of a Fresnel zone plate whose zones have rough edges.
F. J. Torcal-Milla, L. Sánchez-Brea
semanticscholar +6 more sources
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 Herein we investigate the character of the near-field emission of a two- (2D) and novel three-dimensional (3D) probe geometries fabricated using 3D direct laser writing lithography.
Micek Patrik +5 more
doaj +2 more sources
Towards Millimeter-wavelength: Transmission-Mode Fresnel-Zone Plate Lens Antennas using Plastic Material Porosity Control in Homogeneous Medium. [PDF]
Sci Rep, 2018 We present two transmission-mode dielectric Fresnel-Zone Plate Lens (FZPL) antennas for use within the V-band spectrum. The proposed FZPs are realized via pure plastic material using two different additive manufacturing processes. The proposed FZP lenses
Pourahmadazar J, Denidni TA.
europepmc +2 more sources
Enhanced Terahertz Sensing via On-Chip Integration of Diffractive Optics with InGaAs Bow-Tie Detectors [PDF]
SensorsThe practical implementation of terahertz (THz) imaging and spectroscopic systems in real operational conditions requires them to be of a compact size, to have enhanced functionality, and to be user-friendly.
Karolis Redeckas +5 more
doaj +2 more sources
Optical Fresnel zone plate flat lenses made entirely of colored photoresist through an i-line stepper [PDF]
Light: Science & ApplicationsLight manipulation and control are essential in various contemporary technologies, and as these technologies evolve, the demand for miniaturized optical components increases. Planar-lens technologies, such as metasurfaces and diffractive optical elements,
Ryohei Yamada +6 more
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Sector-based Fresnel zone plate with extended depth of focus
Optics and Laser Technology, 2022 F. J. Torcal-Milla +2 more
semanticscholar +3 more sources
Diffractive lenses for neutron techniques [PDF]
Scientific ReportsMany neutron techniques can greatly benefit from enhanced neutron lenses for focusing and imaging. In this work, we revisit the potential of diffractive optics for neutron beams, building on advanced high-resolution nano-lithography techniques developed ...
Mano raj Dhanalakshmi Veeraraj +9 more
doaj +2 more sources
A compound Kinoform/Fresnel zone plate lens with 15 nm resolution and high efficiency in soft x-ray
Nanotechnology, 2023 X-ray microscope as an important nanoprobing tool plays a prevailing role in nano-inspections of materials. Despite the fast advances of high resolution focusing/imaging reported, the efficiency of existing high-resolution zone plates is mostly around 5%
Xujie Tong +12 more
semanticscholar +1 more source
IEEE Antennas and Wireless Propagation Letters, 2023 Several passive components of fifth-generation (5G) and future sixth-generation (6G) telecommunication devices require substrate materials of very low dielectric permittivity and losses to avoid wave absorption, reflection, and interference.
M. Kokkonen +5 more
semanticscholar +1 more source
The application of Fresnel zone plate based projection in optofluidic microscopy. [PDF]
Opt Express, 2008 Optofluidic microscopy (OFM) is a novel technique for low-cost, high-resolution on-chip microscopy imaging. In this paper we report the use of the Fresnel zone plate (FZP) based projection in OFM as a cost-effective and compact means for projecting the ...
Wu J, Cui X, Lee LM, Yang C.
europepmc +3 more sources