Dynamic 3D metasurface holography via cascaded polymer dispersed liquid crystal DOI Creative Commons
Shuo Sun, Jin Li, Xiaoxun Li

и другие.

Microsystems & Nanoengineering, Год журнала: 2024, Номер 10(1)

Опубликована: Дек. 24, 2024

Abstract Metasurface with natural static structure limits the development of dynamic metasurface holographic display rapid response and broadband. Currently, liquid crystal (LC) was integrated onto to convert passive metasuface into an active one. But, majority LC-assisted metasurfaces often exhibit trade-offs among degree freedom (DoF, typically less than 2), information capacity, speed, crosstalk. Herein, at first time, we experimentally demonstrate a cascaded device polymer dispersed (PDLC) broadband metasurface, enabling three-dimensional (3D) ultra-high contrast, continuous regulation. The PDLC droplets enable modulation scattering state incident light by high-speed control system for electric scanning. Based on self-addressing, multi-channel PDLC-metasurface device, effect monochrome images switching color-changing broadband, low-crosstalk high has been achieved. Our approach offers novel perspective metasurface.

Язык: Английский

Terahertz Broadband Bimodal Multiplexing Detection Based on Quasi‐Bound States in the Continuum and Guided‐Mode Resonance DOI

Wenyao Yu,

Mengya Pan,

Shuo Liu

и другие.

Annalen der Physik, Год журнала: 2025, Номер unknown

Опубликована: Апрель 16, 2025

Abstract Grating metasurfaces supporting guided‐mode resonance (GMR) can provide ultra‐sharp resonances for light‐matter solid interactions, facilitating their applications in various fields such as sensing, lasers, and imaging. Bound states the continuum (BICs) are unique resonant modes located radiative domain but fully bound without energy leakage. BIC be transformed into quasi‐bound (QBICs) coupled to external radiation meet demand high‐Q resonances. Here, a broadband dielectric terahertz (THz) sensor is presented GMR, which facilitates generation of whose QBIC reach quality factor 10 3 . The has signal enhancement more than dB over entire frequency range 1.25–2.20 THz accurately analyze three absorption peaks explosive materials. design breaks through single‐peak scanning detection by cross‐fertilizing with generating an angular manipulation ultra‐broadband spectrum. It provides powerful tool ultrasensitive trace analysis will facilitate many new sensing applications. Meanwhile, structure support combination flexible materials, improving performance devices broadening optoelectronic devices.

Язык: Английский

Процитировано

0

Selectively Addressing Interleaved Metasurfaces via Dynamically Controlled Talbot Effect DOI
Jiayuan Wang, Chao Meng, Sergey I. Bozhevolnyi

и другие.

Nano Letters, Год журнала: 2025, Номер unknown

Опубликована: Апрель 25, 2025

Optical metasurfaces (MSs), with their inherent design flexibility and subwavelength-scale control of light, offer promising solutions for miniaturizing bulky optical components. Shared-aperture MSs further enhance functionality by integrating multiple through segmented or interleaved designs. However, under uniform illumination, all encoded functions are simultaneously activated, resulting in undesirable crosstalk enhanced background. In this work, we propose experimentally demonstrate selectively addressed (ILMSs) making use the dynamically controlled Talbot effect, which is realized a configuration comprising diffraction grating (DG) cascaded piezo-controlled polarization-multiplexed ILMS. By accurately controlling DG-ILMS distance, leverage position-dependent fringes to achieve dynamic activation different functionalities. We believe that our approach provides versatile integrated solution addressing multifunctional ILMSs thereby paves way development advanced highly systems.

Язык: Английский

Процитировано

0

Real-Time Programmable Nonlinear Wavefront Shaping with Si Metasurface Driven by Genetic Algorithm DOI Creative Commons
Ze Zheng, Gabriel Sanderson,

Soheil Sotoodeh

и другие.

Engineering, Год журнала: 2025, Номер unknown

Опубликована: Май 1, 2025

Язык: Английский

Процитировано

0

36‐Channel Spin and Wavelength Co‐Multiplexed Metasurface Holography by Phase‐Gradient Inverse Design DOI Creative Commons

C. G. Park,

Youngsun Jeon,

Junsuk Rho

и другие.

Advanced Science, Год журнала: 2025, Номер unknown

Опубликована: Май 8, 2025

Abstract Metasurface holography has emerged as a versatile tool for manipulating light at subwavelength scales, offering enhanced capabilities in multiplexing high‐resolution holographic images. However, the scalability of channel remains significant challenge. In this paper, high‐capacity single‐cell metasurface is presented capable maximizing channels by images across both spin and wavelength using single‐phase map. The achievement simultaneous left‐ right‐circular polarization states detailed broad spectral range, from visible to near‐infrared wavelengths, metasurface, optimized through an inverse design minimize loss between target output automatic differentiation. phase profile encode multiple without requiring complex meta‐atoms, thereby reducing fabrication complexity while maintaining high performance. Using method, two implementations are demonstrated, 8‐channel hologram covering regions 36‐channel operating full‐visible spectrum 18 wavelengths separated 20‐nm intervals. Furthermore, noise‐related functions incorporated into optimization process suppress background noise inter‐channel crosstalk, resulting significantly improved image quality fidelity. This approach offers reliable solution further photonic applications such displays, optical data storage, information encryption.

Язык: Английский

Процитировано

0

Nonlinear Metasurfaces for Completed Control of Amplitude, Phase, and Polarization in Broadband Terahertz Generation DOI
Qingwei Wang, Xueqian Zhang, Quan Xu

и другие.

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Май 12, 2025

Abstract Terahertz (THz) generation is a crucial initial step in THz applications. However, the current sources face challenges fully controlling propagation properties of generated waves without use external devices. This limitation leads to bulky systems with unavoidable insertion losses and bandwidth constraints. To overcome these facilitate compact versatile applications, novel approach using nonlinear metasurfaces proposed control amplitude, phase, polarization broadband directly simultaneously at emission stage. The basic design features an elaborated coupling‐controlled chiral meta‐atom, providing adjustable chirality allowing independent amplitude phase strategy under circularly polarized (CP) pump. Furthermore, state emitted wave can be arbitrarily customized by designing superposition left‐handed (LCP) right‐handed (RCP) components. linearly predictable, eliminating need for complex simulations interleaved supercell arrangements. effectiveness this method demonstrated experimentally generating two types unique vectorial fields: spatial‐polarization separable nonseparable states. significantly enhances capabilities metasurfaces, paving way

Язык: Английский

Процитировано

0

Polarization-selective unidirectional and bidirectional diffractive neural networks for information security and sharing DOI Creative Commons
Ziqing Guo, Zhiyu Tan, Xiaofei Zang

и другие.

Nature Communications, Год журнала: 2025, Номер 16(1)

Опубликована: Май 14, 2025

Information security aims to protect confidentiality and prevent information leakage, which inherently conflicts with the goal of sharing. Balancing these competing requirements is especially challenging in all-optical systems, where efficient data transmission rigorous are essential. Here we propose experimentally demonstrate a metasurface-based approach that integrates phase manipulation, polarization conversion, as well direction- polarization-selective functionalities into diffractive neural networks (DNNs). This enables polarization-controllable switch between unidirectional bidirectional DNNs, thus simultaneously realizing A cascaded terahertz metasurface comprising quarter-wave plates metallic gratings designed function unidirectional-bidirectional classifier imager. By introducing half-wave cascade metasurface, achieve polarization-controlled transition unidirectional-bidirectional-unidirectional modes for classification imaging. Furthermore, high-security exchange framework based on DNNs. The proposed DNNs polarization-switchable unidirectional/bidirectional capabilities offer significant potential privacy protection, encryption, communications, exchange.

Язык: Английский

Процитировано

0

Terahertz Metamaterial Absorber for Microorganism and Pesticide Detection Applications DOI
Muhammad Amir Khalil,

Mohammad Tariqul Islam,

Mohamad A. Alawad

и другие.

Optik, Год журнала: 2025, Номер unknown, С. 172413 - 172413

Опубликована: Май 1, 2025

Язык: Английский

Процитировано

0

Tunable Vector Polarization Transformation Enabled by Meta‐Cavity DOI
Chen Chen,

C Niu,

Wange Song

и другие.

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

Опубликована: Май 21, 2025

Abstract Polarization transformation plays a key role in applications of photonics and quantum optics. Traditional bulky optical components are inadequate for miniaturized systems, while metasurfaces offer revolutionary solution, but still face challenges with vector polarization tunability. Here, tunable mechanism is introduced, utilizing bifacial enabled meta‐cavity. By adjusting the cavity length phase modulations to achieve complex interferences two spin light, diverse transformations demonstrated on higher‐order hybrid‐order Poincaré spheres. The results outline powerful paradigm realize way can open new possibilities communications, encryption, beyond.

Язык: Английский

Процитировано

0

Adjoint Method-based Fourier Neural Operator Surrogate Solver for Wavefront Shaping in Tunable Metasurfaces DOI Creative Commons
Chanik Kang,

Joonhyuk Seo,

Ikbeom Jang

и другие.

iScience, Год журнала: 2024, Номер 28(1), С. 111545 - 111545

Опубликована: Дек. 6, 2024

Язык: Английский

Процитировано

2

Transforming High-Resolution Imaging: A Comprehensive Review of Advances in Metasurfaces and Metalenses DOI
Nikolay L. Kazanskiy, Svetlana N. Khonina, Muhammad A. Butt

и другие.

Materials Today Physics, Год журнала: 2024, Номер unknown, С. 101628 - 101628

Опубликована: Дек. 1, 2024

Язык: Английский

Процитировано

1