Multifunctional metasurface lens for imaging and Fourier transform

Wen, Dandan; Yue, Fuyong; Ardron, Marcus; Chen, Xianzhong

doi:10.1038/srep27628

Cited by 58 publications

(40 citation statements)

References 41 publications

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“…Unfortunately, these meta-atoms typically do not satisfy the 100%-efficiency criterion established for PB metasurfaces [54] and, thus, one type of meta-atoms can generate background noise in addition to the desired functionalities. As a result, such meta-devices typically Such a "merging" concept has been straightforwardly applied to realize many other multifunctional meta-devices [58,[61][62][63][64][65]. Figure 1c presents a reflective bifunctional meta-device which can form a holographic image of a 'flower' or a 'bee' as the helicity of incident light changes from left CP (LCP) to right CP (RCP) [63].…”

Section: Appl Sci 2018 8 X For Peer Review 3 Of 17mentioning

confidence: 99%

Multifunctional Metasurfaces Based on the “Merging” Concept and Anisotropic Single-Structure Meta-Atoms

Tang

Cai

et al. 2018

Applied Sciences

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Metasurfaces offer great opportunities to control electromagnetic (EM) waves, attracting intensive attention in science and engineering communities. Recently, many efforts were devoted to multifunctional metasurfaces integrating different functionalities into single flat devices. In this article, we present a concise review on the development of multifunctional metasurfaces, focusing on the design strategies proposed and functional devices realized. We first briefly review the early efforts on designing such systems, which simply combine multiple meta-structures with distinct functionalities to form multifunctional devices. To overcome the low-efficiency and functionality cross-talking issues, a new strategy was proposed, in which the meta-atoms are carefully designed single structures exhibiting polarization-controlled transmission/reflection amplitude/phase responses. Based on this new scheme, various types of multifunctional devices were realized in different frequency domains, which exhibit diversified functionalities (e.g., focusing, deflection, surface wave conversion, multi-beam emissions, etc.), for both pure-reflection and pure-transmission geometries or even in the full EM space. We conclude this review by presenting our perspectives on this fast-developing new sub-field, hoping to stimulate new research outputs that are useful in future applications.

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Section: Appl Sci 2018 8 X For Peer Review 3 Of 17mentioning

confidence: 99%

Multifunctional Metasurfaces Based on the “Merging” Concept and Anisotropic Single-Structure Meta-Atoms

Tang

Cai

et al. 2018

Applied Sciences

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“…Metasurfaces, ultrathin planar structures patterned by monolithic subwavelength elements on surfaces, provide a new way to transform the incident wavefront to the desired forms by controlling the amplitude, phase and polarization of electromagnetic fields [2][3][4][5][6]. Compared with their traditional counterparts, metasurfaces have emerged as unparalleled devices to realize miniaturized, on-chip integrated and multifunctional optical systems [7][8][9][10]. Tremendous breakthroughs in the field of metasurface have given rise to expansive applications ranging from planar imaging lenses [8,9,[11][12][13][14], holograms [15][16][17][18][19], spectrometers [20,21], nonlinear devices [22,23] and even to invisible cloaks [24][25][26], etc.…”

Section: Introductionmentioning

confidence: 99%

Characteristic Analysis of Compact Spectrometer Based on Off-Axis Meta-Lens

Zhou

Chen

2018

Applied Sciences

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Ultra-compact spectrometers with high-resolution and/or broadband features have long been pursued for their wide application prospects. The off-axis meta-lens, a new species of planar optical instruments, provides a unique and feasible way to realize these goals. Here we give a detailed investigation of the influences of structural parameters of meta-lens-based spectrometers on the effective spectral range and the spectral resolution using both wave optics and geometrical optics methods. Aimed for different usages, two types of meta-lens based spectrometers are numerically proposed: one is a wideband spectrometer working at 800-1800 nm wavelengths with the spectral resolution of 2-5 nm and the other is a narrowband one working at the 780-920 nm band but with a much higher spectral resolution of 0.15-0.6 nm. The tolerance for fabrication errors is also discussed in the end. These provides a prominent way to design and integrate planar film-based spectrometers for various instrumental applications.

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“…[29][30][31][32] Slot-type nanoboomerangs have been used for electro-optical switching. 33 A comparable approach was used in the terahertz frequency region for planar electric split ring resonators.…”

Section: Introductionmentioning

confidence: 99%

Nanoboomerang-based inverse metasurfaces—A promising path towards ultrathin photonic devices for transmission operation

et al. 2017

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Ultra-compact visible chiral spectrometer with meta-lenses APL Photonics 2, 036103 (2017) Metasurfaces have revolutionized photonics due to their ability to shape phase fronts as requested and to tune beam directionality using nanoscale metallic or dielectric scatterers. Here we reveal inverse metasurfaces showing superior properties compared to their positive counterparts if transmission mode operation is considered. The key advantage of such slot-type metasurfaces is the strong reduction of light in the parallel-polarization state, making the crossed-polarization, being essential for metasurface operation, dominant and highly visible. In the experiment, we show an up to four times improvement in polarization extinction for the individual metasurface element geometry consisting of deep subwavelength nanoboomerangs with feature sizes of the order of 100 nm. As confirmed by simulations, strong plasmonic hybridization yields two spectrally separated plasmonic resonances, ultimately allowing for the desired phase and scattering engineering in transmission. Due to the design flexibility of inverse metasurfaces, a large number of highly integrated ultra-flat photonic elements can be envisioned, examples of which include monolithic lenses for telecommunications and spectroscopy, beam shaper or generator for particle trapping or acceleration or sophisticated polarization control for microscopy. © 2017 Author (s)

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Multifunctional metasurface lens for imaging and Fourier transform

Cited by 58 publications

References 41 publications

Multifunctional Metasurfaces Based on the “Merging” Concept and Anisotropic Single-Structure Meta-Atoms

Multifunctional Metasurfaces Based on the “Merging” Concept and Anisotropic Single-Structure Meta-Atoms

Characteristic Analysis of Compact Spectrometer Based on Off-Axis Meta-Lens

Nanoboomerang-based inverse metasurfaces—A promising path towards ultrathin photonic devices for transmission operation

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