Results 21 to 30 of about 4,913,708 (237)
Applied Sciences, 2021 We theoretically demonstrate that a family of vortex-lattice structures can be flexibly generated using a multi-beam interference approach. Numerical calculation presents a variety of crystalline and kaleidoscopic patterns.
Chengshang Chen +5 more
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Surface-plasmon-coupled emission microscopy with a spiral phase plate. [PDF]
Opt Lett, 2010 The surface plasmon-coupled emission microscope provides high sensitivity for surface imaging. However, it suffers from a distorted donut-shape point-spread function (PSF).
Tang WT +4 more
europepmc +2 more sources
Evaluation of the Laguerre–Gaussian mode purity produced by three-dimensional-printed microwave spiral phase plates [PDF]
Royal Society Open Science, 2020 Computer-aided design software and additive manufacturing provide flexibility for the direct fabrication of multi-material devices. This design and fabrication versatility has been investigated for the manufacture of dielectric spiral phase plates (SPP ...
D. Isakov +5 more
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Generation and Detection of Optical Vortices with Multiple Cascaded Spiral Phase Plates
Photonics, 2022 Spiral phase plate (SPP) is the widely used method in the generation of vortex beam (VB) with fixed topological charges (TCs) for specific wavelength. Although VB with large TCs can be directly generated by using the SPP with high vortex order.
Ziheng Zhou +4 more
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SPATIAL DYNAMICS OF THE RADIALLY POLARIZED VORTEX BEAMS OF TERAHERTZ-RANGE RADIATION SUBJECTED TO TIGHT FOCUSING [PDF]
Radio Physics and Radio AstronomySubject and Purpose. The paper concerns the effect of tight focusing of the terahertz-range vortex laser beams, formed byradially polarized TM0m modes of a dielectric waveguide-based resonator, that results from beam’s passage through a spiral phase ...
A. V. Degtyarev +3 more
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FREE-SPACE PROPAGATION OF TERAHERTZ LASER VORTEX BEAMS [PDF]
Radio Physics and Radio AstronomySubject and Purpose. Currently, numerous ideas and different methods have been in growth for generating vortex beams — areas of the circular motion of the electromagnetic wave energy flow around the so-called phase singularity points caused by a ...
A. V. Degtyarev +4 more
doaj +1 more source
APL Photonics, 2023 Historically, infinity was long considered a vague concept—boundless, endless, larger than the largest—without any quantifiable mathematical foundation. This view changed in the 1800s through the pioneering work of Georg Cantor, who showed that infinite ...
Subith Kumar +6 more
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Nanomaterials, 2022 Featuring shorter wavelengths and high photon energy, ultraviolet (UV) light enables many exciting applications including photolithography, sensing, high-resolution imaging, and optical communication.
Muhammad Danial Shafqat +4 more
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Modal performance of spiral phase plate VCSELs [PDF]
, 2016 A detailed parametric investigation of the modal performance of single-mode, single-polarization vertical-cavity surface-emitting lasers (VCSELs) loaded with a micro spiral phase plate is reported.
Tibaldi, Alberto +7 more
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Optical vortices by a modal liquid crystal spiral phase plate [PDF]
, 2015 [Poster of]: 16th Topical Meeting on the Optics of Liquid Crystals. Sopot, 13th-18th of September, 2015, Poland.An ideal spiral phase plate based on liquid crystal and high resistivity layers is proposed and theoretically analyzed.
Urruchi del Pozo, Virginia +3 more
core +2 more sources