Efficient Gradient-Based Metasurface Optimization toward the Limits of Wavelength-Polarization Multiplexing DOI
Yanjun Bao, Hongsheng Shi,

Wei Rui

et al.

Nano Letters, Journal Year: 2025, Volume and Issue: unknown

Published: April 3, 2025

Polarization and wavelength multiplexing are the two widely employed techniques to improve capacity in metasurfaces. While previous studies have pushed channel numbers of each technique its individual limits, achieving simultaneous limits both still presents challenges. Furthermore, current methods often suffer from computational inefficiencies, hindering their applicability computationally intensive tasks. In this work, we introduce experimentally validate a gradient-based optimization algorithm using deep neural network (DNN) achieve polarization with high efficiency. By leveraging efficiency DNN-based method, further implement nine multiplexed channels (three wavelengths × three polarizations) for large-scale image recognition tasks total 36 classes single-layer metasurface. The classification accuracy reaches 96% simulations 91.5% experiments. Our work sets new benchmark high-capacity inverse design advanced optical elements.

Language: Английский

Unlocking ultra-high holographic information capacity through nonorthogonal polarization multiplexing DOI Creative Commons
Jie Wang, Jin Chen, Feilong Yu

et al.

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: July 26, 2024

Abstract Contemporary studies in polarization multiplexing are hindered by the intrinsic orthogonality constraints of states, which restrict scope channels and their practical applications. This research transcends these barriers introducing an innovative nonorthogonal polarization-basis approach. Utilizing spatially varied eigen-polarization states within metaatoms, we successfully reconstruct globally that exhibit minimal crosstalk. method not only facilitates generation free-vector holograms, achieving complete degrees-of-freedom three with ultra-low energy leakage, but it also significantly enhances dimensions Jones matrix, expanding to a groundbreaking 10 × scale. The fusion controllable engineering mechanism vectorial diffraction neural network culminates experimental creation 55 intricate holographic patterns across expanded channels. advancement represents profound shift field multiplexing, unlocking opportunities advanced holography quantum encryption, among other

Language: Английский

Citations

18
Neural Network‐Assisted End‐to‐End Design for Full Light Field Control of Meta‐Optics DOI Open Access

Hanbin Chi,

Yueqiang Hu,

Xiangnian Ou

et al.

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 14, 2025

Meta-optics, with unique light-matter interactions and extensive design space, underpins versatile compact optical devices through flexible multi-parameter light field control. However, conventional designs struggle the intricate interdependencies of nano-structural complex responses across wavelengths polarizations at a system level, hindering high-performance full-light Here, neural network-assisted end-to-end framework that facilitates global, gradient-based optimization multifunctional meta-optics layouts for full control is proposed. Its superiority over separated showcased by utilizing limited space multi-wavelength-polarization holography enhanced performance (e.g., ≈6 × structural similarity index experimentally). By harnessing dispersive full-parameter Jones matrix, orthogonal tri-polarization multi-wavelength-depth further demonstrated, breaking channel limitations. To highlight its versatility, non-orthogonal (>3) are arbitrary polarized-spectral multi-information processing applications in display, imaging, computing. The comprehensive elevates meta-optics, delivering superior performance, functionality, improved reliability, thereby paving way next-generation intelligent technologies.

Language: Английский

Citations

2
Perovskite single-pixel detector for dual-color metasurface imaging recognition in complex environment DOI Creative Commons
Jiahao Xiong, Zhihong Zhang, Zile Li

et al.

Light Science & Applications, Journal Year: 2023, Volume and Issue: 12(1)

Published: Nov. 27, 2023

Highly efficient multi-dimensional data storage and extraction are two primary ends for the design fabrication of emerging optical materials. Although metasurfaces show great potential in information due to their modulation different degrees freedom light, a compact detector relevant retrieval is still challenge, especially complex environments. Here, we demonstrate image process by using dual-color metasurface double-layer integrated perovskite single-pixel (DIP-SPD). Benefitting from photoelectric response characteristics FAPbBr2.4I0.6 FAPbI3 films stacked structure, our filter-free DIP-SPD can accurately reconstruct colorful images stored within single-round measurement, even environments with scattering media or strong background noise. Our work not only provides compact, filter-free, noise-robust metasurface, but also paves way color imaging application perovskite-like bandgap tunable

Language: Английский

Citations

28
Dual‐Layer Metasurface Enhanced Capacity of Polarization Multiplexing DOI

Runzhe Zhang,

Yinghui Guo, Fei Zhang

et al.

Laser & Photonics Review, Journal Year: 2024, Volume and Issue: 18(9)

Published: April 30, 2024

Abstract Polarization is the nature of optics. Exploiting metasurface's polarizations can enhance multiplexing capacity but face a limited number channels. For example, single‐layer metasurface offer three independent channels with six degrees freedom (DoFs) including amplitude and phase E x , xy(yx) y Jones matrix. In this work, it theoretically demonstrated that dual‐layer metasurfaces reach eight, overcoming polarization constraints cross‐talk be largely reduced as compared when channel larger than three. Numerical calculations manifest decrease 100%, 63%, 50% for 4, 5, 6, respectively. As proof‐of‐concept demonstration high‐capacity multiplexing, an arbitrary‐polarization‐controlled 5‐channel exhibiting five nanoprintings holographic images under different incident output successfully designed. Thus, research highlighting high‐multiplexing‐capacity significantly advance multifunctional optical devices high efficiency, simple integration, ease manipulation.

Language: Английский

Citations

12
Switchable Two-Dimensional AND and Exclusive OR Operation Based on Dual-Wavelength Metasurfaces DOI
Chang Peng, Tian Huang, Chen Chen

et al.

ACS Nano, Journal Year: 2024, Volume and Issue: 18(5), P. 4424 - 4431

Published: Jan. 26, 2024

Logic operation serves as the foundation and core element of computing networks; it will bring huge vitality to advanced information processing with its adaptation in optical domain. As fundamental logic operations, AND exclusive OR (XOR) operations serve a multitude purposes, such their ability cooperate enabling image interpretation. Here, we propose experimentally demonstrate wavelength multiplexed XOR function based on metasurfaces. By combining two cosine gratings distinct frequencies an initial phase difference π/2, extract similarities differences between input images simultaneously by illuminating them 445 633 nm wavelengths. Additionally, explore potential encryption, where overall security is enhanced distributing parts encoded keys different receivers. This design possesses benefits convenient mode switching high-quality imaging, facilitating applications pattern recognition, machine vision, medical diagnosis, etc.

Language: Английский

Citations

10
Optical Information Encryption Based on Secret Sharing Liquid Crystal Elements with Spatial Dislocation DOI
Xin Xu,

Siyuan Qiao,

Yinghui Guo

et al.

Laser & Photonics Review, Journal Year: 2024, Volume and Issue: 18(10)

Published: May 3, 2024

Abstract Optical encryption is an increasingly significant technique in the realm of information security. In recent decade, there has been considerable interest using planar optics elements for encryption. However, leakage possibly occurs due to limited encrytion channels available single‐layer devices. To circumvent this problem, a novel method put forward secret sharing cascaded liquid crystal (LC) with spatial dislocation, which can produce near‐field patterns and far‐field holographic images under different illumination conditions. Specifically, Malus's Law its inherent one‐to‐four mapping rotational degeneracy, along Pancharatnam‐Berry (PB) phase introduced by LC molecules, achieve multi‐channel are utilized. Therefore, each unit manipulate amplitude imparted output light independently, thus only obtaining both devices decryption be realized. further enhance security, author purposely divide device into multiple regions find that encrypted recovered when two align precisely specific dislocation. These experimental measurements agree well design, demonstrating strong capability broad application prospects design approach field optical high cost‐effectiveness.

Language: Английский

Citations

9
Multi-dimensional optical information acquisition based on a misaligned unipolar barrier photodetector DOI Creative Commons
Shukui Zhang, Hanxue Jiao, Yan Chen

et al.

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: Aug. 16, 2024

Abstract Acquiring multi-dimensional optical information, such as intensity, spectrum, polarization, and phase, can significantly enhance the performance of photodetectors. Incorporating these dimensions allows for improved image contrast, enhanced recognition capabilities, reduced interference, better adaptation to complex environments. However, challenge lies in obtaining on a single photodetector. Here we propose misaligned unipolar barrier photodetector based van der Waals heterojunction address this issue. This structure enables spectral detection by switching between two absorbing layers with different cut-off wavelengths dual-band detection. For polarization detection, anisotropic semiconductors like black phosphorus arsenic inherently possess polarization-detection capabilities without additional elements. By manipulating crystal direction materials during fabrication, device becomes sensitive incident light at angles. research showcases potential capturing paving way next-generation

Language: Английский

Citations

9
Polarization‐Independent Dispersive Complex‐Amplitude Modulation via Anisotropic Metasurfaces DOI Open Access
Hui Yang, Meiyu Peng, Hairong He

et al.

Laser & Photonics Review, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 11, 2025

Abstract Polarization‐independent characteristic is highly desirable for practical applications, and metasurfaces, it typically achieved through isotropic structures. This inevitably leads to a lost degree of freedom (DoF) within the parameter space, thereby restricting realization advanced functionalities in polarization‐independent regime. Here, counterintuitively, dispersive complex‐amplitude modulation via single‐layered anisotropic metasurface. By fully exploiting in‐plane DoFs previously unattainable can be without adding additional challenges metasurface manufacturing. The underlying mechanism relies on optimization superimposed Jones matrix meta‐molecule, which demonstrates identical behavior under pair orthogonal polarization bases. As proof concept, color printing numerically experimentally demonstrated, completely different from resonant structural that depends spectral characteristic. Moreover, integration near‐field printing, far‐field holography, an achromatic multi‐port beam splitter with arbitrary power ratio are demonstrated as well. proposed platform opens up new doors designing compact meta‐devices, holding various applications augmented‐reality displaying, information communication, optical security.

Language: Английский

Citations

1
Three‐Channel Wavefront Shaping Using Non‐Interleaved Spin‐Multiplexed Plasmonic Metasurfaces DOI Creative Commons

Xingling Pan,

Yadong Deng,

Ziru Cai

et al.

Advanced Science, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 18, 2025

Abstract Metasurfaces have garnered significant attention for their ability to manipulate light waves with multifunctional capabilities. Integrating independent wavefront controls within a single metasurface is essential meet the growing demand high‐capacity, flat photonic devices. In this work, versatile non‐interleaved plasmonic platform utilizing quarter‐wave plate meta‐atoms and simultaneous phase modulation of both co‐ cross‐polarized circularly polarized subwavelength pixels, achieved by merging resonance Pancharatnam‐Berry phases presented. We propose experimentally validate three proof‐of‐concept designs operating in near‐infrared range: beam deflector distinct reflection angles, focusing metalens focal lengths, vortex generator tunable topological charges. This paves way customizable, multi‐channel functionalities, advancing development integrated devices enhanced versatility.

Language: Английский

Citations

1
Photonic Devices with Multi-Domain Liquid Crystal Structures DOI Creative Commons
Aleksey Kudreyko, Vladimir G. Chigrinov, Kristiaan Neyts

et al.

Crystals, Journal Year: 2024, Volume and Issue: 14(6), P. 512 - 512

Published: May 28, 2024

Photoalignment by azo dye nanolayers can provide high alignment quality for large-area liquid crystal devices. Application of this technology to active optical elements signal processing and communications is a hot topic photonics research. In article, we review recent demonstrations performance photonic devices, discuss the advantages proposed technology, identify challenges future prospects in research field photoaligned multi-domain structures. We believe that developments discussed here directions potential opportunities applications devices based on photoalignment.

Language: Английский

Citations

8