Results 21 to 30 of about 102,639 (286)
Polar POLICRYPS diffractive structures generate cylindrical vector beams [PDF]
Applied Physics Letters, 2015 Local shaping of the polarization state of a light beam is appealing for a number of applications. This can be achieved by employing devices containing birefringent materials. In this article, we present one such enables converting a uniformly circularly polarized beam into a cylindrical vector beam (CVB).
Alj D +4 more
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A miniaturized acoustic vector sensor with PIN-PMN-PT single crystal cantilever beam accelerometers
Acta Acustica, 2020 Directional sound detection using vector sensors rather than large hydrophone arrays is highly advantageous for target detection in SONAR. However, developing highly sensitive and compact vector sensors for use in a system whose size is limited has been ...
Cho Yohan, Je Yub, Jeong Weui-Bong
doaj +1 more source
Communications Physics, 2023 Air lasing is a simple and promising technique to efficiently produce coherent light in the atmosphere. Yet, its capability to obtain structured light like optical vortices or vector beams is still unexplored.
Jingsong Gao +10 more
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Focus shaping using cylindrical vector beams
Optics Express, 2002 We report a focus shaping technique using generalized cylindrical vector beams. A generalized cylindrical vector beam can be decomposed into radially polarized and azimuthally polarized components. Such a generalized cylindrical beam can be generated from a radially polarized or an azimuthally polarized light using a two-half-wave-plate polarization ...
Qiwen, Zhan, James, Leger
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Nanophotonics, 2023 Using low-refractive-index metamaterials, we design a transmission-type radial-angular cylindrical vector beam generator. A high numerical aperture lens is constructed using an asymmetric meta-grating structure. The metamaterial vector beam generator and
Ke Lan +6 more
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Switchable phase and polarization singular beams generation using dielectric metasurfaces
Scientific Reports, 2017 Singular beams which possess helical phase wavefront or spatially inhomogeneous polarization provide new freedom for optical field manipulation. However, conventional schemes to produce the singular beams have difficulty in realizing the flexible switch ...
Yanliang He +7 more
doaj +1 more source
Super-resolution optical microscopy using cylindrical vector beams
Nanophotonics, 2022 Abstract Super-resolution optical microscopy, which gives access to finer details of objects, is highly desired for fields of nanomaterial, nanobiology, nanophotonics, etc. Many efforts, including tip optimization and illumination optimization etc., have been made in both near-field and far-field super-resolution microscopy to achieve a ...
Min Liu +7 more
openaire +3 more sources
IEEE Photonics Journal, 2019 Singular beams with spatially variant field distributions have various fantastic applications. However, one of the significant challenges that hinder the wide application of singular beams is how to effectively identify the topological charge and the ...
Yanliang He +10 more
doaj +1 more source
Energy flux of a vortex field focused using a secant gradient lens
Компьютерная оптика, 2020 In this paper we simulated the focusing of left circular polarized beam with a second order phase vortex and a second-order cylindrical vector beam by a gradient index Mikaelian lens.
A.G. Nalimov
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Scattering in Multilayered Structures: Diffraction from a Nanohole [PDF]
, 2011 The spectral expansion of the Green's tensor for a planar multilayered structure allows us to semi analytically obtain the angular spectrum representation of the field scattered by an arbitrary dielectric perturbation present in the structure.
Gabriel Molina-Terriza +6 more
core +3 more sources