Reaching the efficiency limit of arbitrary polarization transformation with non-orthogonal metasurfaces

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

Published: Aug. 6, 2024

Polarization transformation is at the foundation of modern applications in photonics and quantum optics. Notwithstanding their applicative interests, basic theoretical experimental efforts are still needed to exploit full potential polarization Here, we reveal that coherent superposition two non-orthogonal eigen-states Jones matrix can improve drastically efficiency arbitrary with respect classical orthogonal By exploiting metasurface stacking twisted configuration, have implemented a powerful termed "non-orthogonal metasurfaces", experimentally demonstrated input-output modulation reaching nearly 100% transmission broadband angle-insensitive manner. Additionally, proposed routing methodology project independent phase holograms quadruplex circular components. Our results outline paradigm achieve extremely efficient optics, multiplexing for communication information encryption microwave optical frequencies. The authors showcase general method engineer unity, taking advantage eigen-formalism circumvent limitation conventional

Language: Английский

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Liquid crystal-integrated metasurfaces for an active photonic platform

Opto-Electronic Advances, Journal Year: 2024, Volume and Issue: 7(6), P. 230216 - 230216

Published: Jan. 1, 2024

Metasurfaces have opened the door to next-generation optical devices due their ability dramatically modulate electromagnetic waves at will using periodically arranged nanostructures. However, metasurfaces typically static responses with fixed geometries of nanostructures, which poses challenges for implementing transition technology by replacing conventional components. To solve this problem, liquid crystals (LCs) been actively employed designing tunable adjustable birefringent in real time. Here, we review recent studies on LC-powered metasurfaces, are categorized as wavefront tuning and spectral tuning. Compared numerous reviews intensively explores development LC-integrated metasurfaces. At end review, briefly introduce latest research trends suggest further directions improving LCs. We hope that accelerate new innovative devices.

Language: Английский

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Multiple degrees‐of‐freedom programmable soft‐matter‐photonics: Configuration, manipulation, and advanced applications

Deleted Journal, Journal Year: 2024, Volume and Issue: 2(1)

Published: Feb. 1, 2024

Abstract For centuries, humans have never stopped exploring the nature of light and manipulating it, since carries multiple information through its intrinsic wave‐particle dualism, including wavelength, amplitude, phase, polarization, spin/orbital angular momentum, etc., which determines physical language basic manners we perceive objective world. Conventional optical devices, such as lenses, prisms, lasers, are composed solid elements that bulky, making it difficult to manipulate dynamically with degrees‐of‐freedom. Comparatively, some responsive soft matters, especially represented by liquid crystals (LCs), possess distinctive orientational order spontaneous self‐assembled superstructures, enabling digital programming microstructures degrees‐of‐freedom manipulation their characteristics. The based on these is, “soft‐matter‐photonics”, is playing an impressive role in integrated functional present age explosion. Herein, review latest advances, respectively, microstructure configurations, manipulations, relevant prospective applications. Additionally, scientific issues technical challenges hinder programing operation manipulations discussed. Toward a four‐dimensional condensed matter, this may wide implications variety applications, fabrication compact elements, multi‐channel processing high‐capacity communications.

Language: Английский

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The rise of electrically tunable metasurfaces

Science Advances, Journal Year: 2024, Volume and Issue: 10(34)

Published: Aug. 23, 2024

Metasurfaces, which offer a diverse range of functionalities in remarkably compact size, have captured the interest both scientific and industrial sectors. However, their inherent static nature limits adaptability for further applications. Reconfigurable metasurfaces emerged as solution to this challenge, expanding potential Among series tunable devices, electrically controllable devices garnered particular attention owing seamless integration with existing electronic equipment. This review presents recent progress reported respect providing an overview technological development trajectory current state art. In particular, we analyze major tuning strategies discuss applications spatial light modulators, optical waveguides, adaptable emissivity regulators. Furthermore, challenges opportunities associated implementation are explored, thereby highlighting bridge gap between electronics photonics enable groundbreaking systems.

Language: Английский

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Design and Evaluation of Tunable Terahertz Metasurface Biosensor for Malaria Detection with Machine learning Optimization Using Artificial Intelligence

Plasmonics, Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 19, 2024

Language: Английский

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Advanced manufacturing of dielectric meta-devices

Photonics Insights, Journal Year: 2024, Volume and Issue: 3(2), P. R04 - R04

Published: Jan. 1, 2024

Language: Английский

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The Road to Commercializing Optical Metasurfaces: Current Challenges and Future Directions

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

Published: Jan. 15, 2025

Optical metasurfaces, components composed of artificial nanostructures, are recognized for pushing boundaries wavefront manipulation while maintaining a lightweight, compact design that surpasses conventional optics. Such advantages align with the current trends in optical systems, which demand communication devices and immersive holographic projectors, driving significant investment from industry. Although interest commercialization metasurfaces has steadily grown since initial breakthrough diffraction-limited focusing, their practical applications have remained limited by challenges such as, massive-production yield, absence standardized evaluation methods, constrained methodology. Here, this Perspective addresses particularly focused on mass production, fabrication tolerance, performance evaluation, integration into commercial systems. Additionally, we select fields where may soon play roles provide perspective potentials. By addressing exploring solutions, aims to foster discussions will accelerate utilization further build near-future metaphotonics platforms.

Language: Английский

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Nonlocal Huygens’ meta-lens for high-quality-factor spin-multiplexing imaging

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

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Cost-Effective and Environmentally Friendly Mass Manufacturing of Optical Metasurfaces Towards Practical Applications and Commercialization

International Journal of Precision Engineering and Manufacturing-Green Technology, Journal Year: 2023, Volume and Issue: 11(2), P. 685 - 706

Published: Nov. 28, 2023

Abstract Optical metasurfaces consisting of two-dimensional nanostructures have rapidly developed over the past two decades thanks to their potential for use as optical components, such metalenses or metaholograms, with ultra-compact form factors. Despite these rapid developments, major challenges commercialization still remain: namely mass production and in real-life devices. A lot effort has been made overcome limitations electron beam lithography which is commonly used fabricate metasurfaces. However, a breakthrough required bring cost down into price range conventional optics. This review covers deep-ultraviolet lithography, nanoimprint self-assembly-based fabrication processes that both cost-effective environmentally friendly We then discuss future displays/sensors are expected take advantage mass-produced The applications will open new realm practical commercialization.

Language: Английский

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Broadband spin and angle co-multiplexed waveguide-based metasurface for six-channel crosstalk-free holographic projection

eLight, Journal Year: 2024, Volume and Issue: 4(1)

Published: May 29, 2024

Abstract Metasurface-based holograms, or metaholograms, offer unique advantages including enhanced imaging quality, expanded field of view, compact system size, and broad operational bandwidth. Multi-channel capable switching between multiple projected images based on the properties illuminating light such as state polarization angle incidence, have emerged a promising solution for realizing switchable dynamic holographic displays. Yet, existing designs typically grapple with challenges limited multiplexing channels unwanted crosstalk, which severely constrain their practical use. Here, we present new type waveguide-based multi-channel support six independent fully crosstalk-free display channels, simultaneously multiplexed by spin guided incident within glass waveguide. We employ k -space translation strategy that allows each distinct target to be selectively translated from evanescent-wave region center propagation-wave into free space without when metahologram is under illumination specific azimuthal angle. In addition, tailoring encoded images, implement three-channel polarization-independent two-channel full-color (RGB) metahologram. Moreover, number can further increased expanding -space’s central-period combing other techniques orbital angular momentum multiplexing. Our work provides novel approach towards realization high-performance optical elements substantial information capacity, opening avenues applications in AR/VR displays, image encryption, storage.

Language: Английский

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