Design of Reflective Tunable Structural Color Metasurface Based on Guided-Mode Resonance Filter and Sb2S3

Luo, Shishang; Zhang, Zhenfu; He, Xin; Zhang, Zhaojian; Li, Xin; Fu, Meicheng; Yang, Junbo

doi:10.3390/photonics10070752

Cited by 4 publications

(2 citation statements)

References 43 publications

(60 reference statements)

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“…Guided mode resonance is a special diffraction phenomenon in a grating medium under certain incident conditions and grating parameters. In optics and optoelectronics, guided mode resonance plays a crucial role in the theory and application [31,32]. The physical mechanism of the guided mode resonance can be considered as the coupling between the external propagation diffraction field and the leaky wave of the modulated waveguide, leading to the characteristics of narrow band and high diffraction efficiency [33,34].…”

Section: Introductionmentioning

confidence: 99%

Full-colour-sorting metalens based on guided mode resonance

Cheng,

Huang,

Zhu

et al. 2024

J. Phys. D: Appl. Phys.

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Full-colour-sorting metalens using few nanostructured layers have recently generated considerable interest as high-sensitivity colour image sensors because of their reliability and high resolution. Based on the guided mode resonance principle and propagation phase modulation, a full-colour-sorting metalens is designed, which can theoretically obtain any wavelength of light from the incident white light and realize arbitrary wavelength focusing with the same focal length in the visible range. Without the loss of generality, we propose a prototype of such metalens used for sorting blue, green and red light from the visible spectrum commonly used in practical applications. The maximum focussing efficiency is over 50% with a relatively high numerical aperture of 0.7. The proposed full-colour-sorting metalens can be used in many applications, such as colour mixing, colour holography, colour filtering, wavelength division multiplexing and so on.

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Section: Introductionmentioning

confidence: 99%

Full-colour-sorting metalens based on guided mode resonance

Cheng,

Huang,

Zhu

et al. 2024

J. Phys. D: Appl. Phys.

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“…In recent years, significant research attention has been focused on metasurfaces [1][2][3][4]. These surfaces are usually composed of artificial electromagnetic materials made from subwavelength-scale dielectric nanostructures.…”

Section: Introductionmentioning

confidence: 99%

Asymmetric Orthogonal Metasurfaces Governed by Toroidal Dipole Bound States in the Continuum

Ji,

Lv,

Yang

et al. 2023

Preprint

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An all-dielectric metasurface composed of orthogonal-slit silicon disks is proposed in this study. By modifying the unit structure of the metasurface with the bound states in the continuum (BIC) theory, a sharp Fano resonance can be generated. The resonance properties of the metasurface are investigated by analyzing the effects of the structural parameters on the resonance using the eigenmode analysis method. The Q factor and the resonance wavelength can be adjusted by varying the slit width, the disk thickness, and the disk radius. The electromagnetic characteristics and mechanism of the toroidal dipole-BIC (TD-BIC) are explored in depth through an analysis of the multipole expansion of the scattered power, along with the electromagnetic field and the current distribution at resonance. This research provides a novel approach for excitation of a strong TD-BIC resonance and proposes potential applications in optical switches, high-sensitivity optical sensors, and related areas.

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Generation of an Ultra‐Long Transverse Optical Needle Focus Using a Monolayer MoS₂ Based Metalens

Li,

Gao,

Wang

et al. 2024

Advanced Optical Materials

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Line‐scan mode enables rapid and high‐throughput imaging through the development of an appropriate optical transverse needle focus. Diffraction gratings allow the generation of a line focus, but they face the challenge of low light power utilization due to multiple high‐order diffractions. In addition, designing the focus requires the selection of functional materials. Atomically thin transition metal dichalcogenides with high dielectric constants provide significant phase shifts to incident light by utilizing phase singularity at zero reflection. However, at zero reflection, no light power is available for utilization, necessitating a balance between phase and amplitude modulation. In this work, the aforementioned issues are addressed by designing a monolayer MoS2 based Fresnel strip metalens. An optical needle primary focus with a transverse length of 40 µm (≈80 λ, the longest value reported to date), a sub‐diffraction‐limited lateral spot, and a broad range of working wavelengths are achieved using the metalens. The metalens not only concentrate light power in the primary diffraction order by overcoming the constraint of momentum conservation but also maintains a constant phase modulation between distinct strips. The novel method for optical manipulation present here holds great promise for applications in biology, oncology, nanofabrication, energy harvesting, and optical information processing.

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Design of Reflective Tunable Structural Color Metasurface Based on Guided-Mode Resonance Filter and Sb2S3

Cited by 4 publications

References 43 publications

Full-colour-sorting metalens based on guided mode resonance

Full-colour-sorting metalens based on guided mode resonance

Asymmetric Orthogonal Metasurfaces Governed by Toroidal Dipole Bound States in the Continuum

Generation of an Ultra‐Long Transverse Optical Needle Focus Using a Monolayer MoS₂ Based Metalens

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Design of Reflective Tunable Structural Color Metasurface Based on Guided-Mode Resonance Filter and Sb2S3

Cited by 4 publications

References 43 publications

Full-colour-sorting metalens based on guided mode resonance

Full-colour-sorting metalens based on guided mode resonance

Asymmetric Orthogonal Metasurfaces Governed by Toroidal Dipole Bound States in the Continuum

Generation of an Ultra‐Long Transverse Optical Needle Focus Using a Monolayer MoS2 Based Metalens

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Product

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Generation of an Ultra‐Long Transverse Optical Needle Focus Using a Monolayer MoS₂ Based Metalens