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...

We demonstrate a simple method for quantitative phase imaging of tiny transparent objects such as living cells based on the transport intensity equation. The experiments are performed using an inverted bright field microscope upgraded with flipping module, which enables to simultaneously create two laterally separated images unequal defocus distances. This add-on module does not include any lenses or gratings and is cost-effective easy-to-alignment. validity this confirmed by measurement...

Optical skyrmions are quasiparticles with nontrivial topological textures that have significant potential in optical information processing, transmission, and storage. Here, we theoretically experimentally achieve the conversion of among Néel, Bloch, intermediate skyrmions, bimerons by polarization devices, where fusion annihilation demonstrated accordingly. By analyzing pattern Poincaré beams, reveal skyrmion topology dependence on device, which provides a pathway for study interactions. A...

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...

Directional coupling of light at the nanoscale plays a significant role in both fundamental research and practical applications, which are crucial for development on-chip photonic devices. In this work, we propose broadband directional coupler surface plasmon polaritons (SPPs) utilizing pair obliquely perforated nanoslits. We demonstrate that tilting slits significantly enhances sensitivity plasmonic phase variation to wavelength incident light, enabling precise wavelength-dependent control...

Toroidal vortices, as intriguing topological structures, play a fundamental role across wide range of physical fields. In this study, we theoretically propose family structured optical toroidal vortices generalized forms in paraxial continuous wave beams. These exhibit unique rotational symmetry while preserving the properties standard vortices. The three-dimensional structures demonstrate l-fold symmetry, which is closely related to charges. Structured introduce additional invariants within...

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...

Control of topologies in structured light fields with multi-degrees freedom integrates fundamental optical physics and topological invariance. Beyond the simple phase vortex, three-dimensional (3D) singularities related nonsingular textures have recently gained significant interest. Here, we experimentally demonstrate creation a family toroidal within paraxial laser beams. By employing single two-dimensional (2D) control, generate propagating 3D textures, effectively embodying configuration...

Twisted strips, known for Möbius are three-dimensional (3D) topological structures describing how a surface can be twisted in space. The spatial configuration readily demonstrated using rectangular strip of paper and is well constructed as liquid crystal defect optical microcavity structures. Here, we use spatiotemporal light field based on the toroidal vortex to show that dynamic phase structure form objects with controllable twists number. structured makes full degree freedom...

We propose the auto-transition of vortex-Airy to vector-Airy beams realized via a liquid crystal q-Airy-plate, whose director distribution is integration q-plate and polarization Airy mask. The polarization, phase, intensity distributions vortex-vector-Airy (VVABs) during transition process individual trajectories vortex beam, vector beam components are both theoretically experimentally investigated. Interesting findings show that pair firstly experience transverse deflection with smaller...

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...

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...

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,...

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...

Surface plasmon holographic microscopy (SPHM), which combines surface with digital microscopy, can be applied for amplitude- and phase-contrast resonance (SPR) imaging. In this paper, we propose an improved SPHM the wavelength multiplexing technique based on two laser sources a common-path hologram recording configuration. Through reconstructing SPR images at wavelengths simultaneously employing SPHM, tiny variation of dielectric refractive index in near field is quantitatively monitored...

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...

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....

We propose and demonstrate a method for reconstructing the topology of optical vortex lines by utilizing digital holography. Compared with traditional methods that need complicated spatial scanning procedure, proposed only requires single exposure hologram. It enables this to be particularly well suited observe dynamic change topology. With method, we experimentally reconstructed dynamically rotating three-dimensional These results are expected provide powerful tool experimental observation...

Recently, physical fields with topological configurations are evoking increasing attention due to their fascinating structures both in fundamental researches and practical applications. Therein, light fields, because of unique opportunity combining experimental analytical studies, attracting more interest. Here, based on the Pancharatnam-Berry (PB) phase, we report creation Hopf linked Trefoil knotted optical vortices by using phase-only encoded liquid crystal (LC) holographic plates....