Metasurfaces provide a compact and powerful platform for manipulating the fundamental properties of light, have shown unprecedented capabilities in both optical holographic display information encryption. For increasing display/storage capacity, metasurfaces with more polarization manipulation channel full-color functionality are now an urgent requirement. Here, minimalist dielectric metasurface capability holography encoded arbitrary is proposed experimentally demonstrated. Without daunting...

Optical cryptography manifests itself a powerful platform for information security, which involves encrypting secret images into visual patterns. Recently, encryption schemes demonstrated on metasurface have revolutionized optical cryptography, as the versatile design concept allows unrestrained creativity. Despite rapid progresses, most efforts focus functionalities of rather than addressing performance issues, such deep capacity, and reconstruction quality. Here, we develop an scheme by...

Abstract Optical knots and links have attracted great attention because of their exotic topological characteristics. Recent investigations shown that the information encoding based on optical could possess robust features against external perturbations. However, as a superior coding scheme, it is also necessary to achieve high capacity, which hard be fulfilled by existing knot-carriers owing limit number associated invariants. Thus, how realize knot-based with capacity key problem solved....

Abstract Beams with spatially‐varying polarization states have been the topic of much interest recently due to unusual ways in which they can interact matter. Cylindrical vector beams (CVBs) represent most commonly used type and feature cylindrically‐symmetric distributions. The optical systems employed thus far for their generation usually only able produce a single CVB. To generate observe multiple CVBs, bulky stringent alignment tolerances needed. Here, method an array CVBs using element,...

Optical image edge detection manifests itself as the advantages of fast speed, low energy consumption, parallel operation, and large information capacity, playing a crucial role in object recognition realms biology, medicine, artificial intelligence. In this paper, dielectric metasurface that can achieve full visible band is proposed. By combining two optical differential methods referring to spatial spectrum-dependent transmission function 4f system-based spectrum phase shift, tetratomic...

Abstract Tailoring the spatial structure of light field in multiple degrees freedom is a research hotspot recent years. The topology field, as one most fascinating structures, such vortex knots and links associated with phase singularities, evoking increasing attention both fundamental practical application. Here, an all‐dielectric metasurface device proposed experimentally demonstrated that can construct at micro scale. These two distinct topological configurations be switched by changing...

In this work, a quasi-nondispersive and spin-decoupled phase modulation strategy was proposed based on the chiral structure. Owing to spin-dependent response of structure, evolution Aharonov–Anandan (AA) geometric can be controlled by tuning different structural parameters independently. Additionally, structure designed nonresonant or weak-resonant minimize influence strong resonant absorption large dispersive propagation shift, leading an efficiently modulation. To prove validity strategy,...

We propose a common criterion for the effect of Gouy phase on distinct polarization transition focused vector vortex beams (VVBs). Such is strongly dependent parity smaller modulus between VVB's order and topological charge. Significantly, cross transitions are observed at areas where two spin components with equi-intensity exactly overlapping difference (GPD) them equals to (2k + 1)π, k an integer. As whole, focal field shows radially variant distributions resulting from unequal intensity...

Abstract The interactions of photonic spin angular momentum and orbital momentum, i.e., the spin-orbit coupling in focused beams, evanescent waves or artificial structures, have attracted intensive investigations for unusual fundamental phenomena physics potential applications optical quantum systems. It is importance to enhance performance optics. Here, we demonstrate a titanium dioxide (TiO 2 )–based all-dielectric metasurface exhibiting high efficient control Hall effect (PSHE)...

Knots and links, as three-dimensional topologies, have played a fundamental role in many physical fields. Despite knotted vortex loops having been shown to exist the light field, configuration of loop is fixed due their topological robustness, making fields with different topologies independent each other. In this work, we established mapping between torus knots/links integer charge optical vortex, demonstrated change intermediate state fractional charges. Furthermore, experimentally...

Dielectric metasurfaces have been widely developed as ultra-compact photonic elements based on which prominent miniaturized devices of general interest, such spectrometers, achromatic lens, and polarization cameras, implemented. With metasurface applications taking off, realizing versatile manipulation light waves is becoming crucial. Here, by detailedly analyzing the wave modulation principles raising from an individual meta-atom, we discuss minimalist design strategy dielectric for...

In this paper, a strategy to achieve simultaneous wavefront shaping and polarization rotation, without compromising the number of pixels energy efficiency as well having broadband operation range, is proposed. This based on application spin-decoupled phase metasurface composed by only one set metal-insulator-metal (MIM) umbrella-shaped chiral unit cells. Quasi-non-dispersive shift can be achieved simply changing single structural parameter structure. By further merging Pancharatnam-Berry...

Achieving arbitrary manipulation of the fundamental properties a light wave with metasurface is highly desirable and has been extensively developed in recent years. However, common approaches are typically targeted to manipulate only one dimension (amplitude, phase, or polarization), which not quite sufficient for acquisition integrated multifunctional devices. Here, we propose strategy design single-layer dielectric metasurfaces that can achieve multidimensional modulation wave. The...

Abstract Recently, based on space-variant Pancharatnam-Berry (PB) phases, various flat devices allowing abrupt changes of beam parameters have been predicted and demonstrated to implement intriguing manipulation spin states in three dimensions, including the efficient generation vector beams, Hall effect light light-guiding confinement, so on. Here, we report construction independently controllable multiple focal spots with different inhomogeneous polarization by utilizing segmented PB...

Optical vortices can evolve in light fields, of which the singularity evolution forms dark lines with complex topological structures, knotted or linked. We propose a method to more accurately and rapidly measure topology optical vortex fields. To locate phase singular points, measurement based on digital holography and, further, numerical search algorithm, are utilized. A motor-driven right-angle prism enables implementation single exposure hologram for each along propagation direction,...

Metasurfaces that enable wave-front manipulation within the subwavelength range exhibit fascinating capabilities and application potentials in ultrathin functional devices. Therein, various metasurfaces to realize delicate transverse even three-dimensional structured light fields have been proposed for applications such as holographic displays, imaging, optical manipulation, etc. However, a metasurface with capability of tailoring axial structure field has not reported so far. Here, we...

Optical singularities, including phase and polarization singularities that are prevalent in vortex beams, cylindrical vector were widely investigated the past few decades because of their physical application interest. Here, we propose a method for measuring within these cylindrically structured light beams by using radial grating (RG), which is fabricated etching patterns on chrome plated soda-lime glass exhibits broadband performance. We demonstrate versatility compatibility obtaining...

Vortices arise in many natural phenomena as dark points of total destructive interference. Sometimes they form continuous lines and even enclosed loops with knotted or linked topologies three spatial dimensions. Since the mathematical topology was introduced into physics, from hydrodynamics, condensed matter physics to photonics, other modern physical fields, scientists have been exploring related topological essences vortex knots; hence, is a forefront topic different systems. Owing...

Light fields with spatially structured states of polarization (SoPs) are gathering increasing attention because their potential applications from optical imaging and micromanipulation to classical quantum communications. Meanwhile, the concepts within light have been extended applied acoustic, electron, matter waves. In this article, we review recent developments SoP modulation fields, especially focusing on three-dimensional (3D) modulations SoPs fields. The progress novel implementations...

Simultaneously controlling the spatial distribution of multiple parameters a light field in three-dimensional (3D) space is highly desirable because its prominent applications areas optical imaging, microscopy, and manipulation. Phase-only encoding techniques that use phase-only computer-generated hologram (CGH) to reshape efficiently reconstruct target fields have fostered substantial interests. In this paper, we propose convenient method construct vector with spatially structured 3D by...

Metasurfaces enable the multidimensional manipulation of light fields in a subwavelength scale. However, low-cost preparation large-area metasurfaces is still challenge. In this Letter, we first, to best our knowledge, use laser plasmonic nano-printing technique efficiently manufacture with capability. By utilizing phase-polarization mapping method, fabricated silicon-based metasurface for color display, and indium tin oxide-based decoupled near- far-field holographic displays. This flexible...

We present a newly improved approach for fast measuring the state of polarization (SOP) arbitrary beams based on Pancharatnam-Berry phase theory. Only single exposure hologram, which is formed by interference reference beam and two separated orthogonal circular components object beam, needed. By numerically reconstructing complex amplitudes from SOP can be further calculated out. Moreover, this method eliminates influence variation intensity distribution makes it easy adjustment more robust....