Results 21 to 30 of about 5,729,346 (195)
Data in Brief, 2021 In this data article, we present the spectroscopic structural data of the pottery samples collected from Petén Itzá, Guatemala. Detailed Fourier transmission infrared, powder X-ray diffraction, scanning electron microscopy coupled to electron dispersive ...
Kefa K. Onchoke +4 more
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Van Der Waals Materials for Subdiffractional Light Guidance
Photonics, 2022 Photonics is a natural next technological step after an era of electronics. However, the diffraction limit of light poses severe limitations on photonic elements and dictates their size.
Georgy Ermolaev +5 more
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Ultra low-loss low-efficiency diffraction gratings
Optics Express, 2005 The realization of ultra low-loss dielectric reflection gratings with diffraction efficiencies between 7% and 0.02% is presented. By placing the grating beneath the highly reflective layerstack scattering was significantly reduced. This concept allows the all-reflective coupling of high laser radiation to high finesse cavities, thereby circumventing ...
Clausnitzer, T. +8 more
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Optics Express, 2012 We present numerical and experimental results on inhibiting diffraction losses associated with the lowest order transverse electric (TE1) mode of a terahertz (THz) parallel-plate waveguide (PPWG) via the use of slightly concave plates. We find that there
Marx Mbonye, R. Mendis, D. Mittleman
semanticscholar +1 more source
Properties of NGO 3% Silicon Steel Asymmetrically Cold Rolled [PDF]
Materials Research, 2015 The effects of asymmetric and conventional deformations and annealing on the microstructure of non-grain-oriented (NGO) 3 wt% silicon steel were analyzed by x-ray diffraction, optical microscopy and magnetometry.
Ramon Alves Botelho +3 more
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Shibuya Method and Modified ITU Knife Edge Diffraction Loss Model for Computing N Knife Edge Diffraction Loss [PDF]
American Journal of Software Engineering and Applications, 2017 In this paper, algorithm for applying Shibuya multiple knife edge diffraction method and modified ITU-R P 526-13 knife edge diffraction loss approximation model are presented. Particularly, in this paper, algorithm for using the two models for computing N knife edge diffraction loss is presented.
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Optical loss due to diffraction by concentrator Fresnel lenses [PDF]
AIP Conference Proceedings, 2014 Fresnel lenses are widely used in concentrating photovoltaic (CPV) systems as a primary optical element. They focus sunlight on small solar cells or on the entrance apertures of secondary optical elements. A Fresnel lens consists of several prism rings and diffraction by these prism rings is unavoidable.
Hornung, T., Nitz, P.
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Field canalization using anisotropic 2D plasmonics
npj 2D Materials and Applications, 2022 Optical devices capable of suppressing diffraction nature of light are of great technological importance to many nanophotonic applications. One important technique to achieve diffractionless optics is to exploit field canalization effect.
Po-Han Chang, Charles Lin, Amr S. Helmy
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Loss of coherence in double-slit diffraction experiments [PDF]
Physical Review A, 2005 8 pages, 3 ...
Sanz, A.S., Borondo, F., Bastiaans, M.J.
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Managing spatial diffraction through a periodic loss modulation [PDF]
SPIE Proceedings, 2014 We show that periodic distributions of gain or losses on the wavelength scale allow managing spatial diffraction of light beams, with no index contrast. It has been recently predicted that such artificial periodic structures, analogous to Photonic Crystals (PhCs), would also hold the novel spatial beam propagation effects reported for PhCs such as ...
Botey Cumella, Muriel +4 more
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