Abstract Achieving structural colors with wide color gamut, large viewing angle, and high resolution remains practically challenging. Here, proposed is an asymmetric Fabry–Perot (F–P) lossy cavity to realize subtractive colors, simultaneously featuring angle insensitivity, resolution, good flexibility. The experimental results demonstrate that the realized are insensitive up ±60°, arising from negligible light propagation phase shift in ultrathin made of amorphous silicon (a‐Si) layer; they...

One of the most intriguing problems light transport in solids is localization that has been observed various disordered photonic structures1-11. The defect-free icosahedral quasicrystals recently predicted theoretically without experimental verification10. Here we report on fabrication submicron-size dielectric and demonstrate results detailed studies properties these structures. Here, present first direct observation intrinsic quasicrystals. This result was obtained time-resolved...

The ultimate image with important information and better visuals can be obtained by fusing infrared visual images. Several fusion methods consist of complex networks to derive the finest parameters from different source images do not exploit reliable salient completely. To avoid limitations loss feature information, we have proposed a multilayer triple dense network for visible named as MTDFusion, which completely exploits features utilizes residual combination input adaptively. encoding is...

A broadband optical absorber based on the nanostructured germanium (Ge) film composed of single-sized circular nanodisk-nanohole arrays is proposed, which demonstrates high efficiency, strong polarization independence, and large viewing angle. Due to electric magnetic resonance absorption modes excited by nanostructure in highly lossy Ge film, obtains a absorptivity, reaching above 90% over full visible wavelength, it can be maintained well at angle ±50°. Based geometrical symmetry, proved...

Structural color printing based on plasmonic metasurfaces has been recognized as a promising alternative to the conventional dye colorants, though brightness and polarization tolerance are still great challenge for practical applications. In this work, we report novel metasurface subtractive employing ultrathin hexagonal nanodisk-nanohole hybrid structure arrays. Through both experimental numerical investigations, thus generated taking advantages of extraordinary low transmission (ELT)...

The decreasing pixel size of digital image sensors for high-resolution imaging brings a great challenge the matching color filters. Currently, conventional dye filters with several microns set fundamental limit resolution. Here, we put forward kind structural filter circular nanohole-nanodisk hybrid nanostructure arrays at sub-diffraction-limit spatial resolution based on uncoupled localized surface plasmon polaritons (LSPPs). Due to LSPPs taking effect, could generate an individual even...

Snapshot multispectral imaging (MSI) has been widely employed in the rapid visual inspection by virtues of non-invasive detection mode and short integration time. As critical functional elements snapshot MSI, narrowband, customizable, pixel-level filter arrays (MSFAs) that are compatible with sensors difficult to be efficiently manufactured. Meanwhile, monolithically integrating MSFAs into imagers still remains challenging considering strict alignment precision. Here, we propose a...

As one of the simplest methods to construct snapshot spectral imagers, multispectral filter array (MSFA) has been applied commercial miniatured imagers. While most them have fixed configurations channels, lacking flexibility and replaceability. Moreover, conventional MSFA only comprises filtering channels but lacks panchromatic channel which is essential in detecting dim indistinct objects. Here, we propose a modular assembly method for imager can simultaneously acquire object's information...

The predecessor of China Optics was and Applied Digest, which founded in 1985. At that time, it the only retrieval journal field optics China. end 2008, Digest renamed

A novel low-cost, batch-fabrication method combining the spin-coating nanosphere lithography (NSL) with conventional photolithographic technique is demonstrated to efficiently produce metallic planar microlenses and their arrays. The developed are composed of subwavelength nanoholes can focus light effectively in entire visible spectrum, foci sizes close Rayleigh diffraction limit. By changing spacing diameter nanoholes, focusing efficiency be tuned. Although random defects commonly exist...

We proposed a periodic coaxial honeycomb nanostructure array patterned in silver film to realize the plasmonic structural color, which was inspired from natural honeybee hives. The spectral characteristics of structure with variant geometrical parameters are investigated by employing finite-difference time-domain method, and corresponding colors thus derived calculating XYZ tristimulus values transmission spectra. study demonstrates that suggested only single layer has high transmission,...

Abstract The design of micropolarizer array (MPA) patterns in Fourier domain provides an efficient approach to reconstruct and investigate the polarization information. Inspired by Alenin’s works, this paper, we propose improved model cover both 2 × N MPAs other original MPAs, which entirely new class MPA is suggested. performance evaluated through analysis numerical simulations compared with existing MPAs. Particularly, analyze reconstruction accuracy first three Stokes parameters degree...

Degeneration of inverse synthetic aperture radar (ISAR) image quality may be caused by rotational motion induced quadratic phase error (QPE). Traditional algorithms can't correct the QPE well with smaller number pulses. In this paper, Parametric Compressed Sensing Least Square (PCS-LS) is proposed to compensate on each range bin and reconstruct robustly. Mig-25 data utilized demonstrate performance algorithm.

Imaging systems work diversely in the image processing domain, and each system contains specific characteristics. We are developing models to fuse images from different sensors environments get promising outcomes for computer vision applications. The multiple unified have been developed tasks such as multi-focus (MF), multi-exposure (ME), multi-modal (MM) fusion. careful tuning of is required optimal results, which still not applicable diverse propose an automatic machine learning (AML)...

The predecessor of China Optics was and Applied Digest, which founded in 1985. At that time, it the only retrieval journal field optics China. end 2008, Digest renamed

In this work, we consider the optical properties of icosahedral quasicrystals. Quasicrystals were created by direct laser writing. This method creation made it possible to create three-dimensional structures high quality. Optical investigated using diffraction. The diffraction patterns from such experimentally recorded.

Abstract Here we report on fabrication of 3D submicron-size dielectric icosahedral quasicrystals and show a photonic dualism these structures. Relying far-field measurements, found pronounced patterns unconventional Bragg diffraction, which indicates the existence multiple pseudogaps.