Results 31 to 40 of about 43,891 (214)
Optimization of parameters of multilayer diffraction gratings using needle variations
Известия высших учебных заведений. Поволжский регион: Физико-математические науки, 2022 Background. The purpose of the work is to optimize the diffraction efficiency in the first diffraction order of a multilayer diffraction grating. Material and methods. Needle variations are used to optimize diffraction efficiency.
V.Yu. Martynova +2 more
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Diffraction gratings based on multilayer silicon nitride waveguide with high upward efficiency and large effective length [PDF]
, 2021 Diffraction gratings with high upward diffraction efficiency and large effective length are required for chip-scale light detection and ranging. In this paper, we propose a diffraction grating based on a multilayer silicon nitride waveguide, which theoretically achieves an upward diffraction efficiency of 92$\%$, a near-field effective length of 376 ...
arxiv +1 more source
Replicas of Diffraction Gratings [PDF]
Nature, 1905 KINDLY allow me to correct a statement contained in your notice of Mr. R. J. Wallace's replicas of diffraction gratings in your issue of November 2 (vol. lxxiii. p. 21).
openaire +2 more sources
On Curved Diffraction-gratings [PDF]
Proceedings of the Physical Society of London, 1882 n ...
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Nanophotonics, 2021 Bound states in the continuum (BICs) are observed in optical cavities composed of a high refractive index periodic structure embedded in significantly lower refractive index surroundings, enabling vertical confinement of the grating modes.
Pruszyńska-Karbownik Emilia +2 more
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Well-posedness of grating diffraction problems for plane wave incidence: explicit dependence on wavenumbers and incident angles [PDF]
arXiv, 2023 Suppose that a plane wave is incident onto an impenetrable grating profile of Dirichlet or Impedance type or a penetrable grating. The grating interface is assumed to be given by a Lipschitz function in two dimensions. We derive stability estimate of the grating diffraction problem via variational method with an explicit dependence of solutions on the ...
arxiv
Emerging beam resonances in atom diffraction from a reflection grating [PDF]
Phys. Rev. Lett. 104, 240404 (2010), 2010 We report on the observation of emerging beam resonances, well known as Rayleigh-Wood anomalies and threshold resonances in photon and electron diffraction, respectively, in an atom-optical diffraction experiment. Diffraction of He atom beams reflected from a blazed ruled grating at grazing incidence has been investigated. The total reflectivity of the
arxiv +1 more source
Two-dimension trapezoidal grating raytracing based on the scalar diffraction and scattering theory
AIP Advances, 2018 Diffraction grating is a fundamental optical element in spectral measurement or source monochromation. A newly designed grating named as two-dimension trapezoidal grating (TG), which not only has non-harmonic diffraction, non-background contaminations ...
Z. Yang +8 more
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Sensors, 2021 Grating Interferometry, known in the relevant literature as the High Sensitivity Moiré Interferometry, is a method for in-plane displacement and strain measurement.
Leszek Sałbut, Sergiusz Łuczak
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Compact, astigmatism corrected cross-grating spectrometer [PDF]
EPJ Web of Conferences, 2020 Compact cross-grating spectrometers are inspired by classical high-end Echelle spectrometers and allow to acquire a large spectrum with a high spectral resolution in a single shot.
Kraus Matthias +8 more
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