Robust transmission of spatial, spectral, or temporal distributions light through complex disordered media such as a turbulent atmosphere, biological tissue, turbid remains critical obstacle in many research fields involving imaging, diagnosis, sensing, and communications. Inspired from virtual-gain technique for loss compensation metamaterials, active convolved illumination (ACI) has been recently proposed ubiquitous optical to significantly enhance information transport hence data...

We introduce a loss compensation method to increase the resolution of near-field imaging with plasmonic superlens that relies on convolution high spatial frequency passband function object. Implementation incoherent light removes need for phase information. The is described theoretically and numerical results artificial noise are presented, which display enhanced few tens nanometers, or around 1/15th free space wavelength. A physical implementation designed simulated provide...

Metamaterials composed of carefully designed ``meta-atoms'' enable nearly arbitrary control waves, but, particularly for electromagnetic waves at optical wavelengths, losses due to unwanted scattering and absorption within the meta-atoms can spoil performance. Compensation in metamaterials their devices is critical broader impact field. This study describes a physical implementation plasmon-injection loss compensation presence noise, as an ideal means overcome limitations conventional gain...

Imaging with a silver superlens under incoherent illumination is simulated using the finite-difference time-domain method. Conceding use of light allows for compact source such as light-emitting diode and enables both linear nonlinear deconvolution resulting image only intensity data that remains robust in presence Gaussian additive noise. The result super-resolved double-slit metallic mask objects reconstructions exhibiting increased contrast reduced full-width half-maximum. Resolution...

Recently a coherent optical process called plasmon-injection (Π) scheme, which employs an auxiliary source, has been introduced as new technique to compensate losses in metamaterials. Here, physical implementation of the Π scheme is proposed for enhanced superlens imaging presence absorption and noise. The source constructed by high-intensity illumination (above 1 mW/μm2) integrated with near-field spatial filter. system enables reconstruction object previously unresolvable alone. This work...

We present an active physical implementation of the recently introduced plasmon injection loss compensation scheme for Pendry's non-ideal negative index flat lens in presence realistic material losses and signal-dependent noise. In this implementation, we propose to use a physically convolved external auxiliary source signal amplification suppression noise imaging system. comparison with previous passive implementations sub-diffraction limited imaging, where inverse filter post-processing is...

Metamaterials and plasmonics potentially offer an ultimate control of light to enable a rich number non-conventional devices testbed for many novel physical phenomena. However, optical loss in metamaterials is fundamental challenge rendering conceived applications not viable practical settings. Many approaches have been proposed so far mitigate losses, including geometric tailoring, active gain media, nonlinear effects, metasurfaces, dielectrics, 2D materials. Here, we review recent efforts...

Recently an optical amplification process called the plasmon injection scheme was introduced as effective solution to overcoming losses in metamaterials. Implementations with near-field imaging applications have indicated substantial performance enhancements even presence of noise. This powerful and versatile compensation technique, which has since been renamed a more generalized active convolved illumination, offers new possibilities improving many previously conceived metamaterial-based...

Imaging is indispensable for nearly every field of science, engineering, technology, and medicine. However, measurement noise stochastic distortions pose fundamental limits to accessible spatiotemporal information despite impressive tools such as SIM, PALM/STORM, STED microscopy. How combat this challenge ideally has been an open question decades. Inspired by a "virtual gain" technique compensate losses in metamaterials, "active convolved illumination" recently proposed significantly improve...

The promise of high-resolution imaging beyond the diffraction limit has been a core motivation for research in fields metamaterials and plasmonics. However, problems with material losses have quelled some enthusiasm which once existed. Here, we review our recent approach relying on theory correlations to push limits super-resolution presence noise. Starting plasmon injection scheme compensating losses, subsequently extended same principle broad range near-field far-field systems involving...

Hyperbolic metamaterials acting as spatial filters, passing incident evanescent waves and blocking propagating waves, can be produced for ultraviolet wavelengths by a stack of alternating metal/dielectric films. However, real fabricated devices have disordered layer surfaces due to imperfect material deposition. Here, we investigate the effect realistic surface roughness on filtering properties such devices. The findings implications in subdiffraction imaging photolithography.

We introduce a loss compensation method to increase the resolution of near-field imaging with plasmonic superlens that relies on convolution high spatial frequency passband function object. Implementation incoherent light removes need for phase information. The is described theoretically and numerical results artificial noise are presented, which display enhanced few tens nanometers, or around one-fifteenth free space wavelength. A physical implementation designed simulated provide...

Imaging is indispensable for nearly every field of science, engineering, technology, and medicine. However, measurement noise stochastic distortions pose fundamental limits to accessible spatiotemporal information despite impressive tools such as SIM, PALM/STORM, STED microscopy. How combat this challenge ideally has been an open question decades. Inspired by a "virtual gain" technique compensate losses in metamaterials, "active convolved illumination" recently proposed significantly improve...