Results 1 to 10 of about 68,903 (215)
Tight focusing field of cylindrical vector beams based on cascaded low-refractive index metamaterials [PDF]
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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Influence of initial phase of polarization on tight focusing of vector beam
Results in Optics, 2021 Generally, the influence of initial phase of polarization distribution of incident vector beams always is ignored in its tight focusing, because it just induce the whole rotation of polarization distribution.
Hehe Li +4 more
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Optimized Computation of Tight Focusing of Short Pulses Using Mapping to Periodic Space
Applied Sciences, 2021 When a pulsed, few-cycle electromagnetic wave is focused by optics with f-number smaller than two, the frequency components it contains are focused to different regions of space, building up a complex electromagnetic field structure.
Elena Panova +11 more
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Tight Focusing of Circular Partially Coherent Radially Polarized Circular Airy Vortex Beam
Photonics, 2023 The tight focusing properties of circular partially coherent radially polarized circular Airy vortex beams (CPCRPCAVBs) are theoretically studied in this paper.
Zhihao Wan +10 more
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Tight Focusing Properties of Ring Pearcey Beams with a Cross Phase
Photonics, 2022 We theoretically investigated the properties of tightly focused ring Pearcey beams with a cross phase (CPRPB). The expressions of the distributions of both electric field and magnetic field in the focal region of an objective were first derived from the ...
Chaoqun Yu +8 more
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5D Opto‐Magnetization Endowed by Physics‐Enhanced Deep Learning
Advanced Photonics Research, 2023 In the era of big data, all‐optical control of the magnetization is recognized as an alternative scheme that boosts the accelerating advance of multifunctional integrated opto‐magnetization devices with high‐density capacity.
Weichao Yan +9 more
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Angular and Orbital Angular Momenta in the Tight Focus of a Circularly Polarized Optical Vortex
Photonics, 2023 Based on the Richards-Wolf (RW) formalism, we obtain two different exact expressions for the angular momentum (AM) density of light in the focus of an optical vortex with a topological charge n and right circular polarization.
Victor V. Kotlyar +2 more
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Photonics, 2023 A thorough integral formulation describing the second harmonic generation under tightly focused linearly and radially polarized beams for an arbitrary distribution of the nonlinear susceptibility over the surface of isotropic media was presented.
Sergey Scherbak +3 more
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Comparison of focusing of short pulses in the Debye approximation [PDF]
Компьютерная оптика, 2018 We have examined different types of pulses and features of their frequency spectra. Calculations have shown that a significant distinction between the pulses only takes place at a very short pulse duration (shorter than the oscillation period).
Svetlana Khonina +2 more
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A minimal subwavelength focal spot for the energy flux
Компьютерная оптика, 2021 It is shown theoretically and numerically that circularly and linearly polarized incident beams produce at the tight focus identical circularly symmetric distributions of an on-axis energy flux.
S.S. Stafeev, V.D. Zaicev
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