Rotational Multiplexing Method Based on Cascaded Metasurface Holography

Wei, Qunshuo; Huang, Lingling; Zhao, Ruizhe; Geng, Guangzhou; Li, Junjie; Li, Xiaowei; Wang, Yongtian

doi:10.1002/adom.202102166

Cited by 46 publications

(24 citation statements)

References 55 publications

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“…Holographic metasurface uses a concept similar to traditional optical holography to recreate complex optical wavefronts. − However, metasurface holograms exhibit limited bandwidth. Hence, the resolution of metasurface holographic images is not comparable to conventional digital holograms.…”

Section: Applicationsmentioning

confidence: 99%

Recent Advances in Tunable Metasurfaces: Materials, Design, and Applications

et al. 2022

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Metasurfaces, a two-dimensional (2D) form of metamaterials constituted by planar meta-atoms, exhibit exotic abilities to tailor electromagnetic (EM) waves freely. Over the past decade, tremendous efforts have been made to develop various active materials and incorporate them into functional devices for practical applications, pushing the research of tunable metasurfaces to the forefront of nanophotonics. Those active materials include phase change materials (PCMs), semiconductors, transparent conducting oxides (TCOs), ferroelectrics, liquid crystals (LCs), atomically thin material, etc., and enable intriguing performances such as fast switching speed, large modulation depth, ultracompactness, and significant contrast of optical properties under external stimuli. Integration of such materials offers substantial tunability to the conventional passive nanophotonic platforms. Tunable metasurfaces with multifunctionalities triggered by various external stimuli bring in rich degrees of freedom in terms of material choices and device designs to dynamically manipulate and control EM waves on demand. This field has recently flourished with the burgeoning development of physics and design methodologies, particularly those assisted by the emerging machine learning (ML) algorithms. This review outlines recent advances in tunable metasurfaces in terms of the active materials and tuning mechanisms, design methodologies, and practical applications. We conclude this review paper by providing future perspectives in this vibrant and fast-growing research field.

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Section: Applicationsmentioning

confidence: 99%

Recent Advances in Tunable Metasurfaces: Materials, Design, and Applications

et al. 2022

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“…It nonetheless has limitations including bulky size, sluggish response time, and the presence of specific crosstalk 33,34 , which dramatically reduces multiplexing efficiency. More importantly, the fundamental principle of traditional peristrophic multiplexing is ascribed to the Bragg condition that only occurs on a very thick holographic material 35 . As an alternative, Wei et al presented a rotational multiplexing method based on cascaded metasurfaces 36 .…”

Section: Introductionmentioning

confidence: 99%

Planar peristrophic multiplexing metasurfaces

Chen¹,

Wang²,

Si³

et al. 2023

OEA

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As a promising counterpart of two-dimensional metamaterials, metasurfaces enable to arbitrarily control the wavefront of light at subwavelength scale and hold promise for planar holography and applicable multiplexing devices. Nevertheless, the degrees of freedom (DoF) to orthogonally multiplex data have been almost exhausted. Compared with state-of-theart methods that extensively employ the orthogonal basis such as wavelength, polarization or orbital angular momentum, we propose an unprecedented method of peristrophic multiplexing by combining the spatial frequency orthogonality with the subwavelength detour phase principle. The orthogonal relationship between the spatial frequency of incident light and the locally shifted building blocks of metasurfaces can be regarded as an additional DoF. We experimentally demonstrate the viability of the multiplexed holograms. Moreover, this newly-explored orthogonality is compatible with conventional DoFs. Our findings will contribute to the development of multiplexing metasurfaces and provide a novel solution to nanophotonics, such as large-capacity chip-scale devices and highly integrated communication.

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“…(B) The rotating multiplexing cascaded metasurfaces are seen schematically. Six different holographic pictures can be reconstructed using single-layer approaches I and II and the cascaded approach[134]. (A) Reprinted/adapted with permission from Ref [133]…”

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confidence: 99%

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Recent Advancement in Optical Metasurface: Fundament to Application

2022

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Metasurfaces have gained growing interest in recent years due to their simplicity in manufacturing and lower insertion losses. Meanwhile, they can provide unprecedented control over the spatial distribution of transmitted and reflected optical fields in a compact form. The metasurfaces are a kind of planar array of resonant subwavelength components that, depending on the intended optical wavefronts to be sculpted, can be strictly periodic or quasi-periodic, or even aperiodic. For instance, gradient metasurfaces, a subtype of metasurfaces, are designed to exhibit spatially changing optical responses, which result in spatially varying amplitudes of scattered fields and the associated polarization of these fields. This paper starts off by presenting concepts of anomalous reflection and refraction, followed by a brief discussion on the Pancharatanm–Berry Phase (PB) and Huygens’ metasurfaces. As an introduction to wavefront manipulation, we next present their key applications. These include planar metalens, cascaded meta-systems, tunable metasurfaces, spectrometer retroreflectors, vortex beams, and holography. The review concludes with a summary, preceded by a perspective outlining our expectations for potential future research work and applications.

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Rotational Multiplexing Method Based on Cascaded Metasurface Holography

Cited by 46 publications

References 55 publications

Recent Advances in Tunable Metasurfaces: Materials, Design, and Applications

Recent Advances in Tunable Metasurfaces: Materials, Design, and Applications

Planar peristrophic multiplexing metasurfaces

Recent Advancement in Optical Metasurface: Fundament to Application

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