Resonant Meta‐Lens in the Visible DOI Open Access
Rong Lin, Jin Yao, Zhihui Wang

et al.

Laser & Photonics Review, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 30, 2024

Abstract Meta‐lenses can offer potential improvements over traditional optical components in imaging, display, and detection. Initial meta‐lenses strive for uniform spectral responses broadband full‐color imaging. Nevertheless, enhancing wavelength selectivity remains crucial specific applications, such as fluorescence imaging augmented reality, requiring wavelengths. Current methods struggle to balance nonlocal resonance with local phase control or introduce an additional filter layer. Here, all‐dielectric resonant meta‐lens wavelength‐selective focusing based on the Fresnel zone plate design is experimentally demonstrated. The coupling between lattice Mie‐type effectively manipulated reflection bandwidth. Without considering excitation control, reflectively focus at a of 460 nm while allowing normal transmission non‐resonant wavelengths, which generally restricted conventional metallic counterparts. Simulation (experimental) results indicate high color purity 90% (66%), surpassing those filtering functions. A multi‐resonant further designed red, green, blue colors. This work offers enhanced options meta‐lenses, expanding their display applications.

Language: Английский

Terahertz switchable metasurface for polarization conversion and hologram manipulation DOI
Zhi Xu, Jinxin Yang, Zhengyong Song

et al.

Optics and Lasers in Engineering, Journal Year: 2024, Volume and Issue: 184, P. 108641 - 108641

Published: Oct. 16, 2024

Language: Английский

Citations

13
Microcavity-assisted multi-resonant metasurfaces enabling versatile wavefront engineering DOI Creative Commons
Shih‐Hsiu Huang,

Hsiu-Ping Su,

Chaoyun Chen

et al.

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

Published: Nov. 7, 2024

Metasurfaces have exhibited exceptional proficiency in precisely modulating light properties within narrow wavelength spectra. However, there is a growing demand for multi-resonant metasurfaces capable of wavefront engineering across broad spectral ranges. In this study, we introduce microcavity-assisted metasurface platform that integrates subwavelength meta-atoms with specially designed distributed Bragg reflector (DBR) substrate. This enables the simultaneous excitation various resonant modes metasurface, resulting multiple high-Q resonances spanning from visible to near-infrared (NIR) regions. The developed generates up 15 peaks visible-NIR spectrum, achieving maximum efficiency 81% (70.7%) simulation (experiment) an average 76.6% (54.5%) and standard deviation 4.1% (11.1%). Additionally, demonstrate versatility amplitude, phase, modulations at peak wavelengths. By integrating structural color printing vectorial holographic imaging, our proposed shows potential applications optical displays encryption. work paves way development next-generation broad-ranging photonics beyond.

Language: Английский

Citations

9
Organic Metasurfaces with Contrasting Conducting Polymers DOI

Xiangyu Huang,

Robin Kaissner,

Benjamin Renz

et al.

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

Published: Jan. 6, 2025

Conducting polymers have emerged as promising active materials for metasurfaces due to their electrically tunable states and large refractive index modulation. However, existing approaches are often limited infrared operation or single-polymer systems, restricting versatility. In this Letter, we present organic featuring dual conducting polymers, polyaniline (PANI) poly(3,4-ethylenedioxythiophene) (PEDOT), achieve contrasting dynamic optical responses at visible frequencies. Sequential electrochemical polymerizations locally conjugate subwavelength-thin layers of PANI PEDOT onto preselected gold nanorods, creating electro-plasmonic antennas with distinct optoelectronic properties. This dual-polymer approach enables metasurface pixel control without individual electrode routing, thereby simplifying designs. The exhibit dual-channel functions, including anomalous transmission holography, through the redox-state switching both polymers. Our work underscores potential applications, offering a pathway advanced reconfigurable devices

Language: Английский

Citations

2
Leaky Guided Mode-Induced Large-Angle Nonlocal Metasurfaces DOI
Dong-Min Jeon, Hongyoon Kim, Junsuk Rho

et al.

ACS Photonics, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Metasurfaces that can manipulate light in the spatial domain via local modes are an ultrathin alternative to conventional optical systems. However, achieving large-angle modulation with such metasurfaces presents significant challenges as diminished efficiency. To address this, concept of metagrating has been introduced, facilitating development devices a high numerical aperture or wide field view. Nonlocal metasurfaces, which possess nonlocal and control both temporal domains, encounter even greater difficulties due mode degradation wavelength-period dependency, but effective solution not proposed yet. Here, we devised method for realizing by inducing multiple leaky guided (LGMs) using minimally perturbed meta-atom array conjunction waveguide slab. A system achieves spectral leveraging geometric phase additional grating vector coupling between LGMs is designed, this quality factor diffraction efficiency 2.2 × 103 29%, respectively, at extreme deflection angle 79°. This investigation holds potential applications systems requiring wavelength-selective modulation, augmented reality harmonic generation.

Language: Английский

Citations

1
Nonlocal Huygens’ meta-lens for high-quality-factor spin-multiplexing imaging DOI Creative Commons
Jin Yao, Yubin Fan, Yunhui Gao

et al.

Light Science & Applications, Journal Year: 2025, Volume and Issue: 14(1)

Published: Jan. 30, 2025

Abstract Combining bright-field and edge-enhanced imaging affords an effective avenue for extracting complex morphological information from objects, which is particularly beneficial biological imaging. Multiplexing meta-lenses present promising candidates achieving this functionality. However, current multiplexing lack spectral modulation, crosstalk between different wavelengths hampers the quality, especially samples requiring precise wavelength specificity. Here, we experimentally demonstrate nonlocal Huygens’ meta-lens high-quality-factor spin-multiplexing Quasi-bound states in continuum (q-BICs) are excited to provide a high quality factor of 90 incident-angle dependence. The generalized Kerker condition, driven by Fano-like interactions q-BIC in-plane Mie resonances, breaks radiation symmetry, resulting transmission peak with geometric phase polarization-converted light, while unconverted light exhibits dip without phase. Enhanced polarization conversion efficiency 65% achieved, accompanied minimal value, surpassing theoretical limit traditional thin metasurfaces. Leveraging these effects, output state efficient wavelength-selective focusing profile. counterpart serves as spatial frequency filter based on incident-angular dispersion, passing high-frequency edge details. Bright-field detection thus presented under two spin states. This work provides versatile framework metasurfaces, boosting biomedical sensing applications.

Language: Английский

Citations

1
Phase-change metasurfaces for reconfigurable image processing DOI
Tingting Liu, Jumin Qiu, Tianbao Yu

et al.

Applied Physics Letters, Journal Year: 2025, Volume and Issue: 126(8)

Published: Feb. 24, 2025

Optical metasurfaces have enabled high-speed, low-power image processing within a compact footprint. However, reconfigurable imaging in such flat devices remains critical challenge for fully harnessing their potential practical applications. Here, we propose and demonstrate phase-change capable of dynamically switching between edge-detection bright-field the visible spectrum. This reconfigurability is achieved through engineering angular dispersion at electric magnetic Mie-type resonances. The customized metasurface exhibits an angle-dependent transmittance profile amorphous state Sb2S3 meta-atoms efficient isotropic edge detection, angle-independent crystalline uniform imaging. nanostructured Sb2S3-based hold significant applications computer vision autonomous driving systems.

Language: Английский

Citations

1
Chip-scale metaphotonic singularities: topological, dynamical, and practical aspects DOI Creative Commons
Tianyue Li, Mengjiao Liu,

Jiahao Hou

et al.

Chip, Journal Year: 2024, Volume and Issue: unknown, P. 100109 - 100109

Published: Sept. 1, 2024

Language: Английский

Citations

4
Diffractive Metasurface‐Enabled Single‐Shot Characterization of Hybrid‐Order Poincaré Beams DOI Open Access
Xiaoxin Li,

Bojian Shi,

Qi Jia

et al.

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

Published: March 5, 2025

Abstract Hybrid‐order Poincaré beams (HyOPBs) with complex transverse polarization states hold significant potential in optical communication and quantum information. Fully characterizing the parameters of HyOPBs is a key task to accelerate applications. Conventional methods typically require mapping multiple reconstructing point by point, creating fundamental bottleneck for fast measurement real‐time monitoring parameters. In this work, single‐shot characterization scheme demonstrated applying diffractive neural networks system cascaded metasurfaces. The designed metasurfaces essentially function as an processor, efficiently extracting high‐dimensional spatial modes amplitude Whereafter, are accurately predicted, correctly reconstructed help electronic deep networks. This innovative approach validated through series simulation studies average reconstruction errors <2.68% σ 1.84% θ, respectively. work provides effective strategy precise, compact, detection HyOPBs, paving way their application next generation high‐capacity systems.

Language: Английский

Citations

0
Recent Advances in Dielectric Chiral Metasurfaces DOI Creative Commons
Zhipeng Hu, Yuwei Sun,

Hongguang Dong

et al.

Advanced Physics Research, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 25, 2025

Abstract Natural chiral materials commonly possess weak chirality. Strong chirality can be achieved using metasurfaces or metamaterials consisting of atom‐like subwavelength units. Chiral metasurfaces, as a surface layer units, have gained much attention recently, since they are more easily fabricated than while the strong is retained. Compared with metal ones, dielectric low material loss and support rich localized resonance. Here, we review various which classified based on geometry configuration, including three‐dimensional (the unit cell not uniform along height direction) planar direction). To further enhance effect, periodic coupling may adopted to reduce leakage improve resonant quality factor excited field. Various introduced, their potential applications discussed. Dielectric provide new tool in manipulation important applications.

Language: Английский

Citations

0
Nonlinear Metasurfaces: A New Paradigm for Short-Wavelength Generation and Modulation DOI Creative Commons
Zhihui Wang, Rong Lin, Chen Chen

et al.

The Journal of Physical Chemistry C, Journal Year: 2025, Volume and Issue: unknown

Published: March 28, 2025

Language: Английский

Citations

0