Plasmon-induced absorption in stacked metamaterials based on phase retardation

Wan, Mingli; Yuan, Shuqing; Dai, Kejie; Song, Yunfei; Zhou, Fengqun; He, Jian‐Jun

doi:10.1088/1674-1056/23/10/107808

Cited by 8 publications

(5 citation statements)

References 18 publications

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“…[31] Furthermore, Taubert et al theoretically and experimentally demonstrated that the coupling of a broad dipolar to a narrow dark quadrupolar plasmon resonance is possible while simultaneously allowing for a retardation-induced phase shift, resulting in the remarkable EIA phenomenon. [32] Most importantly, switching between the EIT and EIA can be realized by operating a phase shift between two resonators, [33,34] which possess a promising potential for applications in THz detecting, perfect absorbers, and switching. Nevertheless, at present, most research works about the EIT and EIA are based on traditional linearly polarized (LP) waves, and there is very little research on circularly polarized (CP) waves.…”

Section: Introductionmentioning

confidence: 99%

Switchable Metasurface with Electromagnetically Induced Transparency and Absorption Simultaneously Realizing Circular Polarization‐Insensitive Circular‐to‐Linear Polarization Conversion

Gao

Zhang

2022

Annalen der Physik

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A metasurface (MS) with switching features from electromagnetically induced transparency (EIT) to electromagnetically induced absorption (EIA) is theoretically investigated in the terahertz (THz) range by incorporating vanadium dioxide (VO2) when circular polarization‐insensitive circularly polarized waves are incidents, which can also simultaneously realize circular‐to‐linear polarization conversion well. While the VO2 ring is in an insulator state, two new transparent EIT windows both are gained between 0.97 THz and 1.16 THz because of destructive interference between the two metal rings that are seen as bright modes. Once the VO2 ring is tuned to the metallic state, a perfect EIA phenomenon is observed between 0.824 THz and 1.233 THz, achieving the transition from the EIT to EIA behavior well. The received electromagnetic waves are radiated to left‐handed circularly polarized (LCP) or right‐handed circularly polarized (RCP) waves with identical phases and amplitudes through the radiation patches when the LCP or RCP ones are incident. Whereby, a resultant linearly polarized wave is obtained between 0.9 THz and 1.2 THz, and relative bandwidth reaches 29%. The outcomes of maximal group index and group delay both are 1934 and 488 ps at 1.08 THz, and maximal absorption is 90.3% at 1.06 THz.

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Section: Introductionmentioning

confidence: 99%

Switchable Metasurface with Electromagnetically Induced Transparency and Absorption Simultaneously Realizing Circular Polarization‐Insensitive Circular‐to‐Linear Polarization Conversion

Gao

Zhang

2022

Annalen der Physik

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“…In recent years, artificially prepared metamaterial devices have demonstrated unique electromagnetic properties that originate from the coupled interaction between electromagnetic waves and designed periodic arrays of sub-wavelength air holes. [1][2][3][4][5] Of these designed metamaterial structures, selfsymmetric metal/dielectric/metal composite multilayer nanostructures have been studied most widely, both numerically and experimentally. [6][7][8][9][10] This is because this configuration offers enormous modulation flexibility over the effective medium parameters (including the effective permeability, effective permittivity and effective impedance).…”

Section: Introductionmentioning

confidence: 99%

Design and experimental verification of a dual-band metamaterial filter

2016

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In this paper, we present the design, simulation, and experimental verification of a dual-band free-standing metamaterial filter operating in a frequency range of 1 THz-30 THz. The proposed structure consists of periodically arranged composite air holes, and exhibits two broad and flat transmission bands. To clarify the effects of the structural parameters on both resonant transmission bands, three sets of experiments are performed. The first resonant transmission band shows a shift towards higher frequency when the side width w 1 of the main air hole is increased. In contrast, the second resonant transmission band displays a shift towards lower frequency when the side width w 2 of the sub-holes is increased, while the first resonant transmission band is unchanged. The measured results indicate that these resonant bands can be modulated individually by simply optimizing the relevant structural parameters (w 1 or w 2 ) for the required band. In addition, these resonant bands merge into a single resonant band with a bandwidth of 7.7 THz when w 1 and w 2 are optimized simultaneously. The structure proposed in this paper adopts different resonant mechanisms for transmission at different frequencies and thus offers a method to achieve a dual-band and low-loss filter.

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“…[5][6][7] This is because artificial metamaterials associated with many novel optical properties [8][9][10][11][12] can lead to strong couplings between electric and magnetic responses attributed to their peculiar geometric structures as well as their unit sizes much smaller than the wavelength of radiation. [13][14][15][16][17][18] Utilizing these strong electromagnetic couplings in chiral geometric structures, the strong CD and optical activity can occur. [19][20][21][22][23][24][25][26] Recently, Kuwata-Gonokami et al have demonstrated that the giant optical activity could exist in two-dimensional gratings consisting of chiral gold nanostructures with subwavelength features.…”

Section: Introductionmentioning

confidence: 99%

Enhanced circular dichroism based on the dual-chiral metamaterial in terahertz regime

Shao

Wang

et al. 2016

Chinese Phys. B

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The obvious circular dichroism (CD) and optical activity can be obtained based on the chiral metamaterial due to the plasmon-enhanced effect, which is very attractive for future compact devices with enhanced capabilities of light manipulation. In this paper, we propose a dual-chiral metamaterial composed of bilayer asymmetric split ring resonators (ASRR) that are in mirror-symmetry shape. It is demonstrated that the CD can get enhancement in the terahertz regime. Moreover, the CD can be further improved by modulating the asymmetry of ASRR. The enhanced CD effect in the terahertz regime has great potential applications in sensing, biomedical imaging, and molecular recognition.

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Plasmon-induced absorption in stacked metamaterials based on phase retardation

Abstract: Wan Ming-Li(万明理) a) † , Yuan Shu-Qing(袁书卿) a) , Dai Ke-Jie(代克杰) b) , Song Yue-Li(宋月丽) a) , Zhou Feng-Qun(周丰群) a) , and He Jin-Na(何金娜) a) a)

Cited by 8 publications

References 18 publications

Switchable Metasurface with Electromagnetically Induced Transparency and Absorption Simultaneously Realizing Circular Polarization‐Insensitive Circular‐to‐Linear Polarization Conversion

Switchable Metasurface with Electromagnetically Induced Transparency and Absorption Simultaneously Realizing Circular Polarization‐Insensitive Circular‐to‐Linear Polarization Conversion

Design and experimental verification of a dual-band metamaterial filter

Enhanced circular dichroism based on the dual-chiral metamaterial in terahertz regime

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