All-dielectric metasurface based on Particle Swarm Optimization algorithm for generating high-purity vortex pulses

Optics Communications, Год журнала: 2025, Номер unknown, С. 131812 - 131812

Опубликована: Март 1, 2025

Язык: Английский

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A Modular Composite Coding Strategy for Accurate and Continuous Beam Scanning in Full Space Based on Coding Metasurfaces

Опубликована: Янв. 1, 2025

Язык: Английский

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Strong Coupling Based on Quasibound States in the Continuum of Nanograting Metasurfaces in Near-Infrared Region

Photonics, Год журнала: 2025, Номер 12(5), С. 508 - 508

Опубликована: Май 19, 2025

Quasibound states in the continuum (qBICs) have aroused much attention as a feasible stage to investigate optical strong coupling due their extremely high-quality factors (Q-factors) and extraordinary electromagnetic field enhancement. However, current demonstrations of based on qBICs primarily focused visible spectral range, while research near-infrared (NIR) regime remains scarce. In this work, we design nanograting metasurface supporting Friedrich–Wintgen bound (FW BICs). We demonstrate that FW BIC formation stems from destructive interference between Fabry–Pérot cavity modes metal–dielectric hybrid guided-mode resonances. To qBIC–exciton system, simulated interaction MoTe2 excitons metasurfaces. A Rabi splitting 55.4 meV was observed, which satisfies criterion. Furthermore, chiral medium layer is modeled inside by rewriting weak expression boundary conditions. mode qBIC–chiral system circular dichroism (CD) spectrum demonstrates response successfully transferred exciton–polaritons systems through coupling. comparison existing studies, our work significantly larger CD signal under same Pascal parameters with thinner dielectric layer. Our provides new ideal platform for investigating quasibound continuum, exhibits promising applications biomedical detection.

Язык: Английский

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Hybrid Meta‐optics Enabled Ultra‐Broadband and High‐efficiency Polarization Imaging

Laser & Photonics Review, Год журнала: 2025, Номер unknown

Опубликована: Май 23, 2025

Abstract The emergence of hybrid meta‐refractive systems has provided a novel platform for broadband achromatic imaging. However, high diffraction efficiency across wide angles and broad spectra is difficult to achieve with metasurfaces. As result, face challenges in maintaining imaging resolution over both the spectrum field view (FOV). Here, meta‐optics system (HMOS) proposed based on an ultra‐broadband aberration compensator. By integrating geometric‐phase liquid crystal components (GPLCC) polarization imaging, HMOS successfully overcomes existing limitations simultaneously achieving performance, FOV, efficiency. This demonstrates diffraction‐limited performance FOV up 178° ≈100% maximum effective energy utilization theoretically wavelength range 900–1700 nm. fabricated efficiently performs dehazing indoor complex outdoor environments. Furthermore, its lightweight design enables integration unmanned aerial vehicle platforms remote tasks real‐world scenarios. work remarkable potential advancing multifunctional, high‐efficiency, easily deployable optical systems.

Язык: Английский

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Achromatic Full Stokes Polarimetry Metasurface for Full-Color Polarization Imaging in the Visible Range

Nano Letters, Год журнала: 2024, Номер unknown

Опубликована: Окт. 3, 2024

Metasurfaces provide an ultrathin platform for compact, real-time polarimetry. However, their applications in polychromatic scenes are restricted by narrow operating bandwidths that causes spectral information loss. Here, we demonstrate full-color polarization imaging using achromatic polarimeter consisting of four polarization-dependent metalenses. Leveraging intelligent design scheme, achieve effective arbitrary phase compensation and multiobjective matching with a limited database. This system provides broadband achromaticity across wavelengths from 450 to 650 nm, resulting relative bandwidth approximately 0.364 full Stokes imaging. Experimental reconstruction errors 450, 550, nm 7.5%, 5.9%, 3.8%, respectively. Performance is evaluated based on both crosstalk, our achieving three times the performance current state-of-the-art. The full-color, full-polarization capability device further validated customized object. proposed scheme advances practical applications.

Язык: Английский

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Research progress on dynamic holographic display technology based on metasurfaces

Optics & Laser Technology, Год журнала: 2024, Номер 182, С. 112071 - 112071

Опубликована: Ноя. 7, 2024

Язык: Английский

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Image wireless transmission based on microwave digital coding metasurfaces

Journal of the Optical Society of America B, Год журнала: 2024, Номер 41(11), С. D31 - D31

Опубликована: Июль 25, 2024

A 1-bit digital programmable reflective metasurface is proposed for controlling the far-field radiation pattern of reflected electromagnetic waves. By switching on/off states PIN diodes to correspond “0” and “1” states, arranging different coding sequences enables flexible control Based on metasurface, we designed a wireless communication system transmit information by manipulating change Different patterns can information, so basis transmission scheme. As proof this concept, an experimental sample with size 16×16 units was fabricated tested at microwave frequencies. The experiment successfully demonstrated scheme, results showing good agreement theoretical analysis simulation, yielding bit error rate less than 4%. This work verifies potential digitally metasurfaces supporting communication, holding promising applications in development next-generation technologies.

Язык: Английский

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Flexible printing paper-based reconfigurable smart metasurfaces

Mechanics of Advanced Materials and Structures, Год журнала: 2024, Номер unknown, С. 1 - 10

Опубликована: Ноя. 5, 2024

In the rapidly evolving wireless communication landscape, achieving full-dimensional coverage poses a gamut of challenges such as intricacy, high hardware costs and energy consumption. addressing these issues, reconfigurable metasurfaces are being considered potential solution. However, traditional methods producing via printed circuit board (PCB) technologies possess limitations cost extended production cycles. Particularly, in context large-scale scenarios, can also present consumption issues. Therefore, this paper proposes novel type intelligent reflection surface (IRS) characterized by lower costs, reduced consumption, enhanced flexibility, ease manufacture, superior electromagnetic wave modulation capabilities. The proposed smart metasurface is paper-based with conductive ink, which uses ink to draw base metal blocks on flexible substrate, silver-tin patch between blocks, phase response reconstructed silver ink. By adjusting distribution metallic patches, we tailor amplitude distributions generate specific scattering effects. This presents designs six patterns that yield single-beam dual-beam, experimental results aligning closely simulated results, validating feasibility method. low-power, low-cost, efficient IRS expected pave new path for advanced 5 G/6G technologies.

Язык: Английский

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Research on Terahertz Bessel Beams Based on Metasurface

Photonics and Nanostructures - Fundamentals and Applications, Год журнала: 2024, Номер unknown, С. 101329 - 101329

Опубликована: Ноя. 1, 2024

Язык: Английский

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Broadband and Dual-polarized Electromagnetic Transparency at Large Angles Based on Phase and Impedance Regulation of Fishbone Metasurfaces

Materials Today Nano, Год журнала: 2024, Номер unknown, С. 100559 - 100559

Опубликована: Дек. 1, 2024

Язык: Английский

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