Results 51 to 60 of about 12,290,752 (249)
Nanophotonics, 2021 Silicon photonics is playing a key role in areas as diverse as high-speed optical communications, neural networks, supercomputing, quantum photonics, and sensing, which demand the development of highly efficient and compact light-processing devices.
Luque-González José Manuel +8 more
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Multi-wavelength focusing based on nanoholes
New Journal of Physics, 2020 A kind of controllable multi-wavelength focusing metalenses is proposed. The proposed metalenses consist of identical nanometer holes etched in silver film and the beam focusing at three primary wavelengths is controlled without additional phase ...
Yuansheng Han +6 more
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Polarization quadrature measurement of subwavelength diffracting structures [PDF]
Applied Optics, 1997 The amplitude and the phase of the diffracted far field depends on polarization when the diffracting structure is comparable to or less than the wavelength. When the far-field amplitude and the phase of one polarization with respect to the orthogonal polarization is measured, small changes in the structure can be measured.
Marx, D. S., Psaltis, D.
openaire +5 more sources
IEEE Photonics Journal, 2016 The antireflection (AR) performance and far-field transmittance, depending on the morphology and parameters of subwavelength structures (SWSs), have been investigated by a 3-D finite-difference time-domain (FDTD) method.
X. Ye +8 more
semanticscholar +1 more source
Leaky-Wave Radiations by Modulating Surface Impedance on Subwavelength Corrugated Metal Structures [PDF]
Scientific Reports, 2016 One-dimensional (1D) subwavelength corrugated metal structures has been described to support spoof surface plasmon polaritons (SPPs). Here we demonstrate that a periodically modulated 1D subwavelength corrugated metal structure can convert spoof SPPs to ...
B. Cai +5 more
semanticscholar +1 more source
Enhanced Conversion Efficiency for Solar Cells With Periodic Grating of Nanowires
IEEE Photonics Journal, 2013 The absorption of an amorphous silicon thin film with periodic gratings formed by an array of nanowires with varied heights and different profile shapes is studied.
Ya Han Ye +2 more
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Field Structures and Singularities in Subwavelength Optics
Vestnik Moskovskogo Universiteta, Seriya 3: Fizika, AstronomiyaA brief overview of the current state of the problem of electromagnetic field singularities arising from the refraction and scattering of light by material objects is given. The discussion begins with caustics arising from ray tracing in geometric optics and consistently moves toward increasing the accuracy of consideration and decreasing the scale ...
Tribelsky, M. I., Luk'yanchuk, B. S.
openaire +2 more sources
Optical Interaction of a Pair of Nanoholes in Au Film via Surface Plasmon Polaritons
IEEE Photonics Journal, 2014 The optical interaction mechanism of a nanohole pair milled in an opaque gold film by means of surface plasmon polaritons (SPPs) propagation is investigated.
M. Janipour +2 more
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Asymmetric transmission in nanophotonics
Nanophotonics, 2023 In a reciprocal medium, transmission of electromagnetic (EM) waves is symmetric along opposite directions which restrict design and implementation of various systems in optics and photonics.
Sheikh Ansari Abbas +2 more
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Near-field radiative heat transfer between parallel structures in the deep subwavelength regime. [PDF]
Nature Nanotechnology, 2015 Thermal radiation between parallel objects separated by deep subwavelength distances and subject to large thermal gradients (>100 K) can reach very high magnitudes, while being concentrated on a narrow frequency distribution. These unique characteristics
R. St-Gelais +3 more
semanticscholar +1 more source