Design Method of a Broadband Wide-Angle Plasmonic Absorber in the Visible Range

Ming, Xianshun; Tan, Qiaofeng

doi:10.1007/s11468-016-0236-z

Cited by 28 publications

(15 citation statements)

References 30 publications

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“…To reduce the ports where power travels, the PA is restricted to be subwavelength, i.e., period P < λ. The p polarized incident light can excite SPP mode-or magnetic resonance in the MDM resonator, and significant magnetic enhancement can be observed in the localized area in the dielectric layer beneath the metal grid [12], [14], [15], [30], [31]. The resonant wavelength can be estimated by combining the standing wave resonant condition and the SPP dispersion relation of multiple layer structure [14], [38] as (a custom of exp(−iωt) is used in this study).…”

Section: Representation Of Absorption By Poles and Zerosmentioning

confidence: 99%

“…W eff in Eq. (1a) is the effective width of the resonator accounting for the additional edge reflection phase shift [14], [38], [39], which can be represented as…”

Section: Representation Of Absorption By Poles and Zerosmentioning

confidence: 99%

“…A straightforward method to broaden the absorption spectra is to integrate multiple resonances in one unit cell. Collected in [2], [10], [11], there are four mainstream tactics: planarly tiling multi-size resonators [12]- [14], vertically stacking multi-size resonators [15], [16], dispersing plasmonic nanocomposites [3], [17]- [22] and space-filling with nontrivial patterns [23], [24]. Some designs like using lumped elements [25], adopting high intrinsic loss material [26]- [28] and constructing non-resonant impedance match materials [11], [29] are also proposed to achieve broadband absorption.…”

Section: Introductionmentioning

confidence: 99%

“…As for the numerical optimization of these BPA designs, most studies use full-vector simulation algorithms such as Finite-Difference Time-Domain (FDTD) [16], Finite Element Method (FEM) [13], [30], [31], Finite Integration Time Domain (FITD) [7], [24], Finite Integration Frequency Domain (FIFD) [14], [23] and Rigorous Coupled Wave Analysis (RCWA) [12], [15] to obtain the spectra directly, which can be computation expensive and time-consuming when searching a large parameter space with high spectra resolution. Meanwhile, the strong resonance nature of BPAs permits reduced order methods based on their eigenfrequencies to reconstruct the absorption spectra for a fast initial design.…”

Section: Introductionmentioning

confidence: 99%

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Optimization of Broadband Perfect Absorber by Weierstrass Factorization

Ming

Sun

2019

IEEE Photonics J.

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We present a new method based on Weierstrass factorization to optimize broadband perfect absorber (BPA) made of metal-dielectric-metal elements, which is an efficient and general approximation to calculate the absorption of these subwavelength structures. With the resonant wavelengths estimated by semi-analytical equations, we design a planar BPA tiling three subunits in one unit cell and a vertical tapered BPA stacking 20 pairs of metal-dielectric layers in one unit cell. Both BPAs shows almost over 90% and wide angle absorption in the concerned range. This method can be an alternative to the traditional full vector methods in initial design.

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Section: Representation Of Absorption By Poles and Zerosmentioning

confidence: 99%

“…W eff in Eq. (1a) is the effective width of the resonator accounting for the additional edge reflection phase shift [14], [38], [39], which can be represented as…”

Section: Representation Of Absorption By Poles and Zerosmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Optimization of Broadband Perfect Absorber by Weierstrass Factorization

Ming

Sun

2019

IEEE Photonics J.

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“…Recent advances in this eld have witnessed the rapid development of the broadened absorption bandwidth (i.e., broadband PMAs) because broadband PMAs have both improved performance and increased capabilities. [11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27] Based on a range of literature reviews, we found that broadband PMAs can be obtained by employing two kinds of construction methods based on the unit structures of vertical stacking [11][12][13][14][15][16][17][18][19][20] or co-planar superlattices [21][22][23][24][25][26][27][28][29] consisting of several different dimensions of metallic elements. These two methods are not impeccable, however, and they suffer from some certain signicant disadvantages.…”

Section: Introductionmentioning

confidence: 99%

A broadband terahertz metamaterial absorber enabled by the simple design of a rectangular-shaped resonator with an elongated slot

et al. 2019

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Broadband metamaterial absorbers are of critical importance in practical applications, but their obtainment approaches are quite complex at present. We demonstrate here that a fairly simple structure design formed by a rectangular-shaped resonator having an elongated slot can be utilized to achieve a broadband absorption response at terahertz frequencies. More than 50% absorption in a continuous frequency range of 1.62 THz (with a central frequency of 2.05 THz) can be gained, and its relative absorption bandwidth is 79.02%, which is superior to that of previous broadband absorption devices. The basic principle of the broadband absorption originates from the superposition of four different but narrowly separated resonance peaks that resulted from different response positions of the suggested resonator.Results further reveal that the broadband terahertz absorption performance (or its four resonance peaks) can be controlled by the resonator dimensions. The suggested method can provide a new type of design strategy to realize broadband integrated terahertz absorption devices.

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Review of Broadband Metamaterial Absorbers: From Principles, Design Strategies, and Tunable Properties to Functional Applications

Wang

Duan

et al. 2023

Adv Funct Materials

111

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Metamaterial absorbers have been widely studied and continuously concerned owing to their excellent resonance features of ultra-thin thickness, light-weight, and high absorbance. Their applications, however, are typically restricted by the intrinsic dispersion of materials and strong resonant features of patterned arrays (mainly referring to narrow absorption bandwidth). It is, therefore essential to reassert the principles of building broadband metamaterial absorbers (BMAs). Herein, the research progress of BMAs from principles, design strategies, tunable properties to functional applications are comprehensively and deeply summarized. Physical principles behind broadband absorption are briefly discussed, typical design strategies in realizing broadband absorption are further emphasized, such as top-down lithography, bottom-up self-assembly, and emerging 3D printing technology. Diversified active components choices, including optical response, temperature response, electrical response, magnetic response, mechanical response, and multi-parameter responses, are reviewed in achieving dynamically tuned broadband absorption. Following this, the achievements of various interdisciplinary applications for BMAs in energy-harvesting, photodetectors, radar-IR dual stealth, bolometers, noise absorbing, imaging, and fabric wearable are summarized. Finally, the challenges and perspectives for future development of BMAs are discussed.

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Design Method of a Broadband Wide-Angle Plasmonic Absorber in the Visible Range

Cited by 28 publications

References 30 publications

Optimization of Broadband Perfect Absorber by Weierstrass Factorization

Optimization of Broadband Perfect Absorber by Weierstrass Factorization

A broadband terahertz metamaterial absorber enabled by the simple design of a rectangular-shaped resonator with an elongated slot

Review of Broadband Metamaterial Absorbers: From Principles, Design Strategies, and Tunable Properties to Functional Applications

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