A5002873556- Metamaterials and Metasurfaces Applications
- Orbital Angular Momentum in Optics
- Advanced Antenna and Metasurface Technologies
- Advanced Optical Imaging Technologies
- Photorefractive and Nonlinear Optics
- Near-Field Optical Microscopy
- Neural Networks and Reservoir Computing
- Optical and Acousto-Optic Technologies
- Optical Polarization and Ellipsometry
- Liquid Crystal Research Advancements
- Digital Holography and Microscopy
- Antenna Design and Analysis
- Microfluidic and Bio-sensing Technologies
- Collaboration in agile enterprises
- Underwater Acoustics Research
Northwestern Polytechnical University
2022-2025
Ministry of Industry and Information Technology
2022-2025
Chongqing University
2024
Orbital angular momentum (OAM) multiplexed holograms have attracted a great deal of attention recently due to their physically unbounded set orthogonal helical modes. However, preserving the OAM property in each pixel hinders fine sampling target image principle and requires fundamental filtering aperture array detector plane. Here, we demonstrate concept metasurface-based vectorial holography with cylindrical vector beams (CVBs), whose unlimited polarization orders unique distributions can...
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 Optical computing and image processing performed by sensor front‐end metasurfaces is receiving increasing interest because of advantages such as significant reduction latency time, energy consumption, system complexity. Despite the rapid progress, concurrent processing, most important feature electronic computing, has not yet been well implemented in optical computing. Here, a metasurface‐based processor that can perform differentiation integration tasks simultaneously proposed....
Light eigenmodes with cylindrical symmetry, such as the Laguerre–Gaussian (LG) modes, are characterized by radial and angular quantum numbers indicating nodes orbital momentum (OAM), which independent invariant upon beam propagation. Here, we connect these two produce a configurable optical vortex ladder. An LG ladder that consists of multiple modes different is proposed, whose OAM state mainlobe can change step By controlling within ladder, every be configured arbitrarily, topological...
We propose a new, to the best of our knowledge, type metalens which phase profile is extracted from higher-order Bessel function. A light beam passing through this would focus along circular trajectory and produces tightly focusing field. Utilizing binarization, we provide method design geometric-phase dielectric metasurface both for polarization modulations. demonstrate two metalenses circularly radially polarized output beams at 633 nm, with measured 0.737λ 0.616λ focal spots,...
Abstract As a powerful platform for next‐generation display, planar liquid crystal (LC) optics exhibit attractive properties such as electro‐optical response, high efficiency, and broadband tunability. With LC applications taking off, multidimensional modulation multiplexing capability of light wave is becoming crucial. Here, Pancharatnam‐Berry phase hologram demonstrated that enables the amplitude, phase, polarization light, which increases degree freedom display to 4 at single wavelength,...
Manipulating polarization is of significance for the application light. Spin-orbit coupling provides a prominent pathway manipulating light field but generally requires tight focusing conditions or anisotropic media. In this paper, we construct ring Airy beams with hybrid polarizations and reveal controllable transforms in their autofocusing dynamics by concomitant spin-orbit free space. The numerical experimental results show that transform dependent on azimuthal orders amplitude vortex...
Metasurface-based vectorial holography can reconstruct images with different polarization states. However, the number of channels in holographic image is relatively small traditional methods. Here, we propose and demonstrate a metasurface hologram which carries infinite channels. It independently control pattern distribution, be regarded as two independent storage dimensions. We use supercell-based to complex amplitude left-handed circularly polarized right-handed components transmitted...
Abstract Optical computing has demonstrated significant advantages over electronic computing, including parallelism, high-speed processing, extensive capacity, and low energy consumption. front ends leveraging metasurfaces provide such as miniaturization seamless integration, but have a serious constraint of single functionality. Here, we propose meta-imager, optical end that integrates two coherent transfer functions corresponding to differential integral convolution kernels into built-in...