Results 21 to 30 of about 453,061 (295)
Compressive Imaging of Subwavelength Structures [PDF]
SIAM Journal on Imaging Sciences, 2009 The problem of imaging extended targets (sources or scatterers) is formulated in the framework of compressed sensing with emphasis on subwavelength resolution. The proposed formulation of the problems of inverse source/scattering is essentially exact and leads to the random partial Fourier measurement matrix.
openaire +3 more sources
Subwavelength optical localization with toroidal excitations in plasmonic and Mie metamaterials
InfoMat, 2021 Since the performance of electronic circuits is becoming rather limited in face of intensively increasing of amount of information and related operations, all‐optical processing offers a promising strategy for future information system.
Ruisheng Yang +7 more
doaj +1 more source
Wide band UV/Vis/NIR blazed-binary reflective gratings: two lithographic techniques investigation [PDF]
EPJ Web of Conferences, 2021 We report on subwavelength reflective gratings for hyperspectral applications operating in the 340 nm-1040 nm spectral range. The blazed grating period is 30 μm and is composed of 2D subwavelength binary structures with sizes in-between 120 nm and 350 nm.
Lee Mane-Si Laure +11 more
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Enhanced transmission of electromagnetic waves through split-ring resonator-shaped apertures [PDF]
, 2011 The design of aperture shape is a promising approach for enhanced transmission through a subwavelength aperture. We designed split-ring-resonator (SRR)-shaped apertures in order to increase the transmission through subwavelength apertures by making use ...
Aydin, Koray +3 more
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Single-Cycle Gap Soliton in a Subwavelength Structure [PDF]
Physical Review Letters, 2010 We demonstrate that a single sub-cycle optical pulse can be generated when a pulse with a few optical cycles penetrates through resonant two-level dense media with a subwavelength structure. The single-cycle gap soliton phenomenon in the full Maxwell-Bloch equations without the frame of slowly varying envelope and rotating wave approximations is ...
Mihai A. Macovei, Xiao-Tao Xie
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Apodized Focusing Fully Etched Subwavelength Grating Couplers
IEEE Photonics Journal, 2015 We experimentally demonstrate apodized focusing subwavelength grating couplers for both the fundamental transverse electric (TE00) mode and the fundamental transverse magnetic (TM00) mode.
Yun Wang +10 more
doaj +1 more source
IEEE Photonics Journal, 2019 We present the realization of a high-efficiency, compact, and thermally tunable unidirectional launcher of surface plasmon polaritons (SPPs) in a double-slit structure filled with phase change materials (PCMs). PCMs such as VO2 provide a feasible way for
Mehdi Afshari-Bavil +4 more
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A Mid-Infrared Dual-Band Filter With Ultra-High Resolving Power
IEEE Photonics Journal, 2020 A mid-infrared (mid-IR) dual-band filter with ultra-high resolving power is designed and numerically investigated. It is composed of an Al2O3 layer between a gold grating and a CaF2 substrate.
Xin He +4 more
doaj +1 more source
Suspended Dielectric Mirrors at Deep Subwavelength Scale
IEEE Photonics Journal, 2018 Reduction in the thickness of air-suspended mirrors to the deep subwavelength scale can facilitate efficient optical and mechanical design. The thinner the mirror, the smaller is its mass, and the more excellent mechanical properties it presents.
Ze Lin Tan +3 more
doaj +1 more source
Improved Antireflection Properties of an Optical Film Surface with Mixing Conical Subwavelength Structures [PDF]
, 2013 Based on finite difference time domain method, an optical film surface with mixing conical subwavelength structures is numerically investigated to improve antireflection property.
Chi-Feng Chen +2 more
core +2 more sources