Results 21 to 30 of about 1,891,930 (242)
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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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
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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
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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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Generation and Enhancement of Persistent Nanoscale Magnetization in All-Dielectric Metasurfaces by Optically Injected and Localized Free Carriers. [PDF]
Adv Sci (Weinh)Infrared metasurface‐guided waves (IR‐MGW) scattered by a time interface (TI) induced by rapid, localized free‐carrier generation can be efficiently rectified to generate strong, persistent magnetic fields. We develop a rigorous, theoretical model to study a time‐varying, dispersive medium and uncover the redistribution of the initial energy of the IR ...
Rawat S, Mukherjee S, Shvets G.
europepmc +2 more sources
Reconfigurable beams with arbitrary polarization and shape distributions at a given plane [PDF]
, 2013 Methods for generating beams with arbitrary polarization based on the use of liquid crystal displays have recently attracted interest from a wide range of sources.
Carnicer González, Arturo +3 more
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Mode-Specific Coupling of Nanoparticle-on-Mirror Cavities with Cylindrical Vector Beams [PDF]
Nanocavities formed by ultrathin metallic gaps permitthe reproducibleengineering and enhancement of light-matter interaction, withmode volumes reaching the smallest values allowed by quantum mechanics.While the enhanced vacuum field in metallic nanogaps ...
Vento, Valeria +3 more
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Generation of cylindrical and elliptical symmetrical vector beam on the Mach–Zehnder interferometer
AIP Advances, 2018 We propose a principal scheme to generate the cylindrical and the elliptical symmetrical vector beam based on a modified Mach-Zehnder interferometer. The modified Mach-Zehnder interferometer, the wave plates, the Polarizing Beam Splitter (PBS) and the ...
Xiang Xu +5 more
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A Low Complexity 2D Pattern Synthesis Algorithm for Cylindrical Array
International Journal of Antennas and Propagation, 2013 This paper proposes a 2D pattern synthesis algorithm for cylindrical array. According to the geometric characteristic of cylinder, we can regard a cylindrical array as an equivalent linear array whose elements are identical circular subarrays. Therefore,
Chao Liu, Zhizhong Ding, Xiaoping Liu
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