Narrow-frequency sharp-angular filters using all-dielectric cascaded meta-gratings

Liu, Weinan; Chen, Rui; Shi, Wei; Zeng, Ke-Bo; Zhao, Fuli; Dong, Jian‐Wen

doi:10.1515/nanoph-2020-0141

Cited by 11 publications

(2 citation statements)

References 55 publications

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“…It may result in modifications of the angular spectrum and sorting incident waves. Various performances of spatial filters are known, which are based on interference patterns [65], anisotropic (indefinite) [66], hyperbolic [67] and epsilon-near-zero [68] media, resonant gratings [29,69,70], and photonic crystals [28,61,[71][72][73].…”

Section: Functionalities Enabled By Deflectionmentioning

confidence: 99%

A simple Mie-resonator based meta-array with diverse deflection scenarios enabling multifunctional operation at near-infrared

et al. 2020

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Deflection, a basic functionality of wavefront manipulation is usually associated with the phase-gradient metasurfaces and the classical blazed gratings. We numerically and experimentally demonstrate an unusually wideband and simultaneously wide-angle deflection achieved at near-infrared in reflection mode for a periodic (nongradient), ultrathin meta-array comprising only one silicon nanorod (Mie resonator) per period. It occurs in the range where only the first negative diffraction order and zero order may propagate. Deflection serves as the enabler for multifunctional operation. Being designed with the main goal to obtain ultra-wideband and wide-angle deflection, the proposed meta-array is also capable in spatial filtering and wide-angle splitting. Spatial filtering of various types can be obtained in one structure by exploiting either deflection in nonzero diffraction orders, or the specular-reflection (zero-order) regime. Thus, the role of different diffraction orders is clarified. Moreover, on–off switching of deflection and related functionalities is possible by changing polarization state of the incident wave. The suggested device is simple to fabricate and only requires cost-effective materials, so it is particularly appropriate for the large-area fabrication using nanoprint lithography. Ultra-wideband wide-angle and other deflection scenarios, along with the other functionalities, are promising for applications in optical communications, laser optics, sensing, detection, and imaging.

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Section: Functionalities Enabled By Deflectionmentioning

confidence: 99%

A simple Mie-resonator based meta-array with diverse deflection scenarios enabling multifunctional operation at near-infrared

et al. 2020

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“…The research papers can be categorized as: (1) Plasmons (six): particle simulation of plasmons [7], plasmonic nanocavity [8], directional router [9], surface plasmon mode [10], Cherenkov radiation [11], and plasmonic stereo-metamolecule [12] (2) Transformation optics (two): [13,14] (3) Pancharatnam-Berry phase and optical angular momentum (five): [15][16][17][18][19] CMOS [28], metalens [29], hybrid metasurface [30], sensor [31], optical trapping [32], photodetector [33], asymmetric transmission [34], structural colors [35], and metagrating [36].…”

mentioning

confidence: 99%

Editorial on special issue “Metamaterials and Plasmonics in Asia”

Ishihara

Zhou

et al. 2020

Nanophotonics

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The special issue "Metamaterials and Plasmonics in Asia" was developed from the A3 Metamaterials Forum, an annual research meeting first established in 2016, but also includes other specially invited papers. Since the first published report on negative refractive index by Prof. Victor Veselago in the Soviet Union, the experimental demonstration of negative index materials in the microwave region by Dr. David Smith in the USA, and the high-resolution imaging application by Prof. John Pendry in the UK, research on metamaterials has exploded in different academic fields. In the early stages of metamaterials research, most of the research activity took place in the USA, the UK and Europe, whilst in Asia it was scarce and rather scattered. Although science is certainly not limited by national borders, it is important to hold regional meetingsespecially in Asiato create a more cohesive and collaborative environment on the continent, enabling young scientists to be easily introduced into the local Metamaterials and Plasmonics community and create a platform for collaborative research. During the Metamaterials 2010 Conference in Karlsruhe, Germany, the late Prof. Masanori Hangyo (Osaka University, Japan) and Prof. Jeong Weon Wu (Ewha Womans University, Korea) conceived the idea of a joint Korea-Japan organized Metamaterials Forum. This first Korea-Japan Metamaterials Forum was organised in Seoul, Korea. Sadly, Prof. Hangyo passed away in 2014, and Prof. Teruya Ishihara (Tohoku University) took over as Japanese co-chair at that point. In 2016, the Metamaterials Forum expanded geographically to include China, with Prof. Lei Zhou (Fudan University, China) as Chinese co-chair and the forum was renamed to "A3 Metamaterials Forum". This special issue holds a plethora of research topics in metamaterials and plasmonics and includes 30 original research articles and six review articles. Of these 36 articles, nineteen contributions originate from China (including one from Hong Kong SAR), six from Korea, five from Singapore, four from Japan, and two from Australia.

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Novel specular-reflection bandpass filter based on composite metagratings

Liu

Chen

et al. 2023

Sci. China Technol. Sci.

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Narrow-frequency sharp-angular filters using all-dielectric cascaded meta-gratings

Cited by 11 publications

References 55 publications

A simple Mie-resonator based meta-array with diverse deflection scenarios enabling multifunctional operation at near-infrared

A simple Mie-resonator based meta-array with diverse deflection scenarios enabling multifunctional operation at near-infrared

Editorial on special issue “Metamaterials and Plasmonics in Asia”

Novel specular-reflection bandpass filter based on composite metagratings

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