Results 21 to 30 of about 223,073 (288)
Photonics, 2022 In this paper, using the Richards–Wolf equations, the focusing of circularly polarized light with flat diffractive lenses is considered. It is shown that, as the numerical aperture (NA) of the lens increases, the size of the focal spot first decreases ...
Sergey S. Stafeev +2 more
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Controlling single diamond NV color center photoluminescence spectrum with a Fabry-Perot microcavity [PDF]
, 2010 We present both theoretical and experimental results on fluorescence of single defect centers in diamond nanocrystals embedded in a planar dielectric microcavity.
Alléaume, Romain +4 more
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IEEE Photonics Journal, 2021 Defocus detection technology is the key technology in the fields of laser direct writing, optical disc storage, and high-precision lithography, which directly affects the accuracy of line drawing.
Jia-Lin Du +7 more
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High numerical aperture Fourier ptychography: principle, implementation and characterization. [PDF]
Opt Express, 2015 Ou X, Horstmeyer R, Zheng G, Yang C.
europepmc +2 more sources
Development of Type 73 GH Equal Hole Perforating Charge
Cejing jishu, 2023 In order to solve the problem of the perforation gun not being centered in the casing due to the gravity of the perforation gun during unconventional horizontal well perforation operations in oil and gas reservoirs, and the uneven perforation of the ...
SUN Chengliang +5 more
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Applied Sciences, 2019 Focusing condition such as numerical aperture (N.A.) has a great influence on the creation of molten area and the stable welding process in fusion micro-welding of glass.
Zhiyong Ouyang +4 more
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COMPARISON OF HOGHORN ANALYSIS METHODS
Perner’s Contacts, 2020 The paper compares an aperture method and full-wave numerical simulations of hoghorn, which is used as a simple primary feed for reflector antennas or individually without reflector.
Vladimir Schejbal +3 more
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Numerically focused optical coherence microscopy with structured illumination aperture [PDF]
Компьютерная оптика, 2018 In optical coherence microscopy (OCM) with a given numerical aperture (NA) of the objectives the transverse resolution can be increased by increasing the numerical aperture of illumination (NAi).
Anton Grebenyuk, Vladimir Ryabukho
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Phase-Controlled Planar Metalenses for High-Resolution Terahertz Focusing
Photonics, 2021 We experimentally demonstrate that high-resolution terahertz focusing can be realized in planar metalenses, which consist of arrays of different V-shaped antenna units on a silicon substrate.
Xin Yu +5 more
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Enhanced transmission through a subwavelength aperture using metamaterials [PDF]
, 2009 We report an enhanced transmission through a single circular subwavelength aperture that is incorporated with a split ring resonator (SRR) at the microwave regime.
Aydin, Koray +6 more
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