Results 1 to 10 of about 1,179,176 (305)
Far-field super-resolution chemical microscopy [PDF]
Light: Science & Applications, 2023 Far-field chemical microscopy providing molecular electronic or vibrational fingerprint information opens a new window for the study of three-dimensional biological, material, and chemical systems.
Mingwei Tang +4 more
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Far-Field Petahertz Sampling of Plasmonic Fields. [PDF]
Nano LettThe collective response of metal nanostructures to optical excitation leads to localized plasmon generation with nanoscale field confinement driving applications in e.g. quantum optics, optoelectronics, and nanophotonics, where a bottleneck is the ultrafast loss of coherence by different damping channels.
Wong KF +12 more
europepmc +9 more sources
Far-field ultrasonic imaging using hyperlenses [PDF]
Scientific Reports, 2022 Hyperlenses for ultrasonic imaging in nondestructive evaluation and non-invasive diagnostics have not been widely discussed, likely due to the lack of understanding on their performance, as well as challenges with reception of the elastic wavefield past ...
Mohamed Subair Syed Akbar Ali +1 more
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Real-Time Far-Field BCSDF Filtering [PDF]
Journal of ImagingThe real-time rendering of large-scale curve-based surfaces (e.g., hair, fabrics) requires efficient handling of bidirectional curve-scattering distribution functions (BCSDFs).
Junjie Wei, Ying Song
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Blackbody far-field coherence [PDF]
Journal of the Optical Society of America A, 2020 We revisit the spectral coherence properties of far-field radiation emanating from an aperture in a blackbody cavity on the basis of Kirchhoff’s boundary conditions. We point out that the far zone cross-spectral density matrix derived earlier in the literature by separately propagating all three aperture-field components does not show transversality of
Al Lakki, Mohammad +2 more
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Evolution of an optical vortex with initial fractional topological charge [PDF]
Компьютерная оптика, 2021 In a number of theoretical (J. Opt. 6, 259 (2004)) and experimental (Opt Express 19, 5760 (2011)) works, an original fractional-TC optical vortex (with TC standing for topological charge) was shown to evolve into an integer optical vortex whose TC is ...
V.V. Kotlyar , A.G. Nalimov
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Analytical Fragility Curves for Bridges Subjected to Near-Fault and Far-Field Ground Motion(Case Study: Bill Emerson Bridge) [PDF]
Journal of Structural and Construction Engineering, 2021 Bridges are one of the major infrastructures of a country, which, in the event of severe seismic activity and the occurrence of collapse, can cause severe damage in different regions and create a severe crisis.
Hossein Pahlavan +2 more
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A Unified Asymptotic Theory of Supersonic, Transonic, and Hypersonic Far Fields
Axioms, 2022 The problems of steady, inviscid, isentropic, irrotational supersonic plane flow passing a body with a small thickness ratio was solved by the linearized theory, which is a first approximation at and near the surface but fails at far fields from the body.
Lung-Jieh Yang, Chao-Kang Feng
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Topological charge of a superposition of two Bessel-Gaussian beams [PDF]
Компьютерная оптика, 2021 Here we show theoretically that a superposition of two Bessel-Gaussian (BG) beams with different topological charges (TC) and different scaling factors (radial components of the wave vectors) has the TC equal to that of the BG beam with the larger ...
V.V. Kotlyar, A.A. Kovalev
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High Power Laser Science and Engineering, 2023 The spatial distribution of beams with orbital angular momentum in the far field is known to be extremely sensitive to angular aberrations, such as astigmatism, coma and trefoil. This poses a challenge for conventional beam optimization strategies when a
J. B. Ohland +6 more
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