Square-shaped beam generated by phase shifted bounded square zone plate
Sign Up to like & getrecommendations! Published in 2017 at "Optical and Quantum Electronics"
DOI: 10.1007/s11082-017-1160-y
Abstract: A novel diffractive element is presented which is made through lateral phase shifted square zone plate bounded along horizontal and vertical axes via two perpendicular rectangle windows, respectively. We demonstrate that under a given condition… read more here.
Keywords: phase; phase shifted; square zone; zone plate ... See more keywords
Giving rise to a set of fractional dipoles using spiral hyperbolic zone plate
Sign Up to like & getrecommendations! Published in 2019 at "Optical and Quantum Electronics"
DOI: 10.1007/s11082-019-2025-3
Abstract: We demonstrate a structured spiral hyperbolic zone plate which is able to generate a set of fractional vortex dipoles. The element is created by superimposition of two perpendicular hyperbolic zone plates in horizontal and vertical… read more here.
Keywords: zone; set fractional; spiral hyperbolic; hyperbolic zone ... See more keywords
Two polygon-like beams generated by a modified interfering vortex spiral zone plate
Sign Up to like & getrecommendations! Published in 2021 at "Results in physics"
DOI: 10.1016/j.rinp.2021.104762
Abstract: Abstract A modified interfering vortex spiral zone plate (MIVSZP) is proposed to produce two polygon-like beams at the focal plane. A radial shift parameter t3 has influence on the shapes of two beams. When t3… read more here.
Keywords: zone plate; polygon like; like beams; two polygon ... See more keywords
3D Observation of Quasicrystal Alloy Using X-ray Differential Phase-Contrast Microscope with a Zone Plate
Sign Up to like & getrecommendations! Published in 2018 at "Microscopy and Microanalysis"
DOI: 10.1017/s1431927618013211
Abstract: In the x-ray region above several keV, phase-contrast is much higher than absorption contrast. We have been developing a differential phase-contrast microscope by using an x-ray microscope with a zone plate and a Foucault knife-edge… read more here.
Keywords: phase; contrast; microscope; differential phase ... See more keywords
Nonlinear Metasurface Fresnel Zone Plates for Terahertz Generation and Manipulation
Sign Up to like & getrecommendations! Published in 2019 at "Nano Letters"
DOI: 10.1021/acs.nanolett.9b01970
Abstract: We introduce a nanoengineered nonlinear metasurface based optical element that acts as an emitting Fresnel zone plate of terahertz (THz) waves. We show that the nonlinear zone plate generates broadband THz radiation and focuses each… read more here.
Keywords: zone; fresnel zone; metasurface; zone plate ... See more keywords
Graphene nanoribbon based plasmonic Fresnel zone plate lenses
Sign Up to like & getrecommendations! Published in 2017 at "RSC Advances"
DOI: 10.1039/c6ra27942b
Abstract: 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. The plasmonic FZP lens shows higher focal intensity and efficiency compared to… read more here.
Keywords: effect; fresnel zone; plate lenses; zone plate ... See more keywords
Enhancing the power of high power microwaves by using zone plate and investigations for the position of virtual cathode inside the drift tube
Sign Up to like & getrecommendations! Published in 2018 at "Physics of Plasmas"
DOI: 10.1063/1.5043595
Abstract: Having the device simplicity and high output-power capacity, the capability of the virtual cathode oscillator (vircator) for emitting high power microwaves is demonstrated. We have investigated the axial-typed vircator in our pulsed power generator, “Chundoong”… read more here.
Keywords: position virtual; zone plate; virtual cathode; power ... See more keywords
Trapezoid-kinoform zone plate lens – a solution for efficient focusing in hard X-ray optics
Sign Up to like & getrecommendations! Published in 2022 at "Journal of Synchrotron Radiation"
DOI: 10.1107/s1600577522000893
Abstract: A new theoretical approach for computing the focusing performance of X-ray optics with circularly symmetry shape was developed. Greyscale electron beam lithography was applied to generate 3D kinoform zones in Au for hard X-rays for… read more here.
Keywords: zone plate; ray optics; optics; trapezoid kinoform ... See more keywords
Fresnel zone plate fabricated using a polyvinyl chloride gel
Sign Up to like & getrecommendations! Published in 2018 at "Optical Engineering"
DOI: 10.1117/1.oe.57.11.117101
Abstract: Abstract. Based on creep-induced deformation of a polyvinyl chloride (PVC) gel in an electric field, a Fresnel zone plate (FZP) is fabricated. The employed electrode is constructed with a series of concentric zones, and the… read more here.
Keywords: pvc; fresnel zone; polyvinyl chloride; gel ... See more keywords
Compact radial shearing interferometer with a randomly encoded cosinusoidal zone plate for wavefront measurements.
Sign Up to like & getrecommendations! Published in 2020 at "Applied optics"
DOI: 10.1364/ao.385182
Abstract: A radial shearing interferometer (RSI) using a randomly encoded cosinusoidal zone plate (RECZP) to measure the wavefront is proposed. The RECZP has two foci, i.e., a virtual focus and a real focus, so its Fresnel… read more here.
Keywords: error; radial shearing; plate; reczp ... See more keywords
Reflection zone plate concept for resonant inelastic x-ray scattering spectrometry.
Sign Up to like & getrecommendations! Published in 2017 at "Applied optics"
DOI: 10.1364/ao.56.000515
Abstract: We simulate a proof-of-principle design of a wavelength dispersive, parallel spectrometer for use in resonant inelastic x-ray scattering (RIXS). The instrument relies on a multiple-channel reflection zone plate (RZP) array, enabling the recording of fluorescence… read more here.
Keywords: resonant inelastic; inelastic ray; reflection zone; ray scattering ... See more keywords