Polarization optics plays a pivotal role in diffractive, refractive, and emerging flat optics, has been widely employed contemporary optical industries daily life. Advanced polarization manipulation leads to robust control of the direction light. Nevertheless, studied largely independent phase or intensity Here, we propose experimentally validate Malus-metasurface-assisted paradigm enable simultaneous properties light simply by modulation. The orientation degeneracy classical Malus's law...

Metasurfaces have recently been used for multichannel image displays with pixel-size lower than a wavelength, which indicates the potential application in ultracompact anticounterfeiting high-density and hidden information. However, current metasurfaces applied are based on sophisticated nanostructure design or at cost of giving up some controls optical transmission matrix to encode multiple information channels. That is, overall degrees freedom offered by these "zero-sum game". Here,...

Abstract By virtue of the extraordinary capability manipulating polarization state, amplitude and phase electromagnetic fields, metasurfaces can be employed to display holographic or nanoprinting images with unprecedented spatial resolution. Bringing holography together is an effective way toward information multiplexing. However, current approaches mostly utilize interleaving stacking nanostructures different functionalities construct multiplexed metasurfaces, hence they are equivalent a...

Characteristics of a multiple-teeth-shaped plasmonic filter are analyzed. As an extension this structure, asymmetrical structure is proposed and numerically simulated by using the finite difference time domain method with perfectly matched layer absorbing boundary condition. It found that can realize function narrow-passband filter. The central wavelength passband linearly increases simultaneous increasing d(1) d(2).

With the rapid progress in computer science, including artificial intelligence, big data and cloud computing, full-space spot generation can be pivotal to many practical applications, such as facial recognition, motion detection, augmented reality, etc. These opportunities may achieved by using diffractive optical elements (DOEs) or light detection ranging (LIDAR). However, DOEs suffer from intrinsic limitations, demanding depth-controlled fabrication techniques, large thicknesses (more than...

Two-dimensional (2D) materials have emerged as promising candidates for miniaturized optoelectronic devices due to their strong inelastic interactions with light. On the other hand, a optical system also requires elastic light-matter control flow of Here we report that single-layer molybdenum disulfide (MoS2) has giant path length (OPL), around one order magnitude larger than from graphene. Using such OPL engineer phase front beams demonstrated, best our knowledge, world's thinnest lens...

We propose and numerically analyze a plasmonic Bragg reflector formed in graphene waveguide. The results show that the can produce broadband stopband be tuned over wide wavelength range by small change Fermi energy level of graphene. By introducing defect into reflector, we achieve Fabry-Perot-like microcavity with quality factor 50 for resonance mode stopband. proposed could used as ultrafast tunable integrated filter modulator. In addition, may find applications graphene-based resonators.

Abstract Metasurfaces capable of controlling more than two types optical properties have drawn a broad interest recently, as they can bring great flexibility and possibilities to the design highly‐integrated multifunctional devices such simultaneous nanoprint holograms. However, current metasurfaces perform only manipulations separately. Furthermore, their supercell or multilayer strategies would complicate both nanostructure manufacturing, are difficult implement miniaturization, low‐cost,...

Metasurfaces are flat structured surfaces that designed to control the two-dimensional distributions of phase, polarization, and intensity profiles optical waves. Usually, response metasurfaces is dispersive polarization-dependent, which indicates capability using for information multiplexing wavelengths polarization states. However, most techniques based on reported so far occur only in spatial domain. Here, we experimentally demonstrate metasurface by exploiting degree freedom frequency...

Beam-steering devices, which are at the heart of optical wireless-broadcasting communication links, play an important role in data allocation and exchange. An ideal beam-steering device features large steering angles, arbitrary channel numbers, reconfigurability, ultracompactness. However, these criteria have been achieved only partially with conventional devices based on waveguides, micro-electricalmechanical systems, spatial light modulators, gratings, will substantially limit application...

A structure based on plasmonic nano-capillary resonators for optical wavelengths demultiplexing is proposed and numerically investigated. The consists of main/bus waveguide connected with series resonators, each which tuned at different wavelength transmission band. model resonator theory given to design the working structure. Both analytical simulation results reveal that channel has linear nonlinear relationships length width

Graphene has drawn tremendous attention as a promising candidate for electronic and optoelectronic applications owing to its extraordinary properties, such broadband absorption ultrahigh mobility.

A polarization-dependent metasurface that consists of nanobrick arrays with spatial varying dimensions in two orthogonal directions has shown independent phase control ability, which paves a new way to design reconfigurable step-zoom lens different focal lengths depending on the polarization states an incident beam. In this paper, we report highly integrated metalens dual based double-sided metasurfaces sitting transparent substrate. By assigning power and balancing aberrations between front...

Conventional metasurface holography is usually implemented in either transmission space or reflection space. Herein, we show a dielectric that can simultaneously project two independent holographic images the and spaces, respectively, merely with single-layer design approach. Specifically, types of nanobricks nanostructured are employed to act as half-wave plates for geometric phase modulation. One type nanobrick designed reflect most incident circularly-polarized light into space, enabled...

Paper-based devices have aroused researchers' enormous interest due to the increasing need for disposable flexible optoelectronic devices. Here, we used a straightforward painting method integrate semiconducting materials on an A4 paper substrate create high-performance photodetectors. A solvent-free 2D SnSe film painted allowed electrons separate from holes more effectively, thereby reducing level of recombination between and electrons. The paper-based photodetectors that prepared...

Abstract A modulation principle and method, the gate‐voltage‐controlled mode‐guiding switching/mode‐cutoff mechanism, is proposed numerically investigated to achieve modulation/attenuation function. The propagating attenuation of graphene 2D waveguide as a function Fermi level cladding analyzed. Different modes with low or high attenuations in wide range have been observed. structure avoids patterning on substrate, thus diminishing energy scattering edges. It also has advantages large...

Unlike common metals, graphene can support transverse electric (TE) surface modes when the imaginary part of its conductivity is negative. We have theoretically investigated and numerically simulated plasmonic properties TE plasmons (SPs) in terahertz regime. The influence external magnetic field, gate voltage temperature as tuning schemes SPs been investigated. results show that be realized by fields or voltage. If permeability dielectrics on both sides layer differs enough, still achieved....

Since the electromagnetic resonance that happens in dielectric nanobricks can be meticulously designed to control both amplitude and polarization of light, an ultracompact, high-resolution continuous grayscale image display method based on resonant metasurfaces is proposed. Magnetic occurs yield unusual high reflectivity depending state incident which paves a new way for ultracompact when consisting nano-polarizer arrays operate. Governed by Malus's law, featured with different orientations...

The unwanted zero-order light accompanied by the birth of diffractive optical elements and caused mainly fabrication errors wavelength variations is a key factor that deteriorates performance diffraction-related devices such as holograms, gratings, beam shapers, splitters, diffusers, microlenses. Here, inspired unique characteristic nano-polarizer-based metasurfaces for both positive negative amplitude modulation incident light, we propose general design paradigm to eliminate diffraction...

Abstract Optical complex‐amplitude determines the propagation behavior of light in free space to maximum extent. Precise control is key generating user‐defined fields. Current attempts optical using metasurface, however, either have limited amplitude/phase step numbers or lost high lateral resolution since amplitude and phase are usually manipulated with size‐varied nanostructures several integrated into a unit‐pixel. Here, it shown that bilayer metasurface can readily decouple phase, thus...

Tunable subwavelength terahertz (THz) plasmonic stub waveguide filters based on indium antimonide are proposed and numerically investigated for the first time. The transmission line theory finite different time domain simulation results reveal that single-stub structure can realize a stop-band filtering function central wavelength of notch is linearly dependent length while nonlinearly width. be actively controlled by tuning temperature. As an extension to structure, multiple-stub InSb slot...

Subwavelength spatial control of phase using metasurfaces is attractive for practical applications such as flat lens, vector beam generator, ultrathin wave-plate and high-resolution holography. All-dielectric provide two modulation mechanisms, which are propagation dependent on the dimension meta-atoms geometric orientation meta-atoms. Recently, it was proposed that by combining phase, arbitrary independent profiles can be imposed a pair orthogonal polarizations. However, succinct expression...

Metasurfaces consist of dielectric nanobrick arrays with different dimensions in the long and short axes can be used to generate phase delays, predicting a new way manipulate an incident beam two orthogonal directions separately. Here we demonstrate concept depth perception based three-dimensional (3D) holograms polarization-independent metasurfaces. 4-step metasurfaces-based fan-out optical elements operating at 658 nm were designed simulated. Two holographic images high fidelity generated...

Under the government of Malus’s law, metasurfaces composed anisotropic nanostructures acting as nano-polarizers have shown their precise optical manipulation polarization profile incident light at nanoscale. The orientation degeneracy implied in law provides a new design degree freedom for multiplexing, which can be employed to amplitude-modulated multiplexing meta-devices. Herein, we experimentally demonstrate this concept by encoding two independent amplitude profiles into single...