Broadband diodelike asymmetric transmission of linearly polarized light in ultrathin hybrid metamaterial

Li, Zhancheng; Chen, Shuqi; Tang, Chengchun; Liu, Wenwei; Cheng, Hua; Liu, Zhe; Li, Jianxiong; Yu, Ping; Xie, Biao; Liu, Zhaocheng; Li, Junjie; Tian, Jianguo

doi:10.1063/1.4902162

Cited by 60 publications

(48 citation statements)

References 25 publications

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“…Further developments showed that bi-layer metasurface structures can be used to demonstrate increased bandwidth of the asymmetric transmission in the near infrared [107,108]. It was shown that the interlayer alignment could have very little effect on the asymmetric transmission [107], which also indicates that the near-field coupling is negligible. This advantageous property is particularly useful in the optical regime where the interlayer alignment is challenging.…”

Section: Asymmetric Transmissionmentioning

confidence: 99%

A review of metasurfaces: physics and applications

2016

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Abstract. Metamaterials are composed of periodic subwavelength metal/dielectric structures that resonantly couple to the electric and/or magnetic components of the incident electromagnetic fields, exhibiting properties that not found in nature. This class of micro-and nano-structured artificial media have attracted great interest during the past 15 years and yielded ground-breaking electromagnetic and photonic phenomena. However, the high losses and strong dispersion associated with the resonant responses and the use of metallic structures, as well as the difficulty in fabricating the micro-and nanoscale 3D structures, have hindered practical applications of metamaterials. Planar metamaterials with subwavelength thickness, or metasurfaces, consisting of single-layer or few-layer stacks of planar structures can be readily fabricated using lithography and nanoprinting methods, and the ultrathin thickness in the wave propagation direction can greatly suppress the undesirable losses. Metasurfaces enable a spatially varying optical response (e.g., scattering amplitude, phase, and polarization), mold optical wavefronts into shapes that can be designed at will, and facilitate the integration of functional materials to accomplish active control and greatly enhanced nonlinear response. This paper reviews recent progress in the physics of metasurfaces operating at wavelengths ranging from microwave to visible. We provide an overview of key metasurface concepts such as anomalous reflection and refraction, and introduce metasurfaces based on the PancharatnamBerry phase and Huygens' metasurfaces, as well as their use in wavefront shaping and beam forming applications, followed by a discussion of polarization conversion in fewlayer metasurfaces and their related properties. An overview of dielectric metasurfaces reveals their ability to realize unique functionalities coupled with Mie resonances and their low ohmic losses. We also describe metasurfaces for wave guidance and radiation control, as well as active and nonlinear metasurfaces. Finally, we conclude by providing our opinions of future developments in this rapidly developing research field.

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Section: Asymmetric Transmissionmentioning

confidence: 99%

A review of metasurfaces: physics and applications

2016

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“…The hybrid metasurface consists of an L-shaped metallic layer and a nanorod layer. With x-polarized incidence, the forward and backward transmission reveals a great diference between 1200 and 1500 nm [47], the simulated results of which are illustrated in Figure 6f. It should be noticed that asymmetric transmission is diferent from optical isolator, which can only be atained with nonreciprocal-active devices.…”

Section: Asymmetric Transmissionmentioning

confidence: 93%

Polarization State Manipulation of Electromagnetic Waves with Metamaterials and Its Applications in Nanophotonics

Chen¹,

Liu²,

Li³

et al. 2017

Metamaterials - Devices and Applications

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Polarization state is an important characteristic of electromagnetic waves. The arbitrary control of the polarization state of such wave has atracted great interest in the scientiic community because of the wide range of modern optical applications that such control can aford. Recent advances in metamaterials provide an alternative method of realizing arbitrary manipulation of polarization state of electromagnetic waves in nanoscale via ultrathin, miniaturized, and easily integrable designs. In this chapter, we give a review of recent developments on polarization state manipulation of electromagnetic waves in metamaterials and discuss their applications in nanophotonics, such as polarization converter, wavefront controller, information coding, and so on.

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“…In our simulations, the dielectric function of gold is defined by Drude mode with plasmon frequency ω p = 1.37 × 10 16 s −1 and damping constant γ = 4.08 × 10 13 s −1 [22]. To account for surface scattering, grain boundary effects in the thin gold film and inhomogeneous broadening, we used a three times higher damping constant than bulk [23,24]. We firstly do not con- sider the presence of the dielectric spacer and substrate in our design (the permittivity of the dielectric is 1), which may be required in its practical realization.…”

Section: Design and Characteristicsmentioning

confidence: 99%

“…Considering the shift of the inclusion resonance caused by the dielectric spacer and substrate, a high performance polarization conversion with a 1000 nm bandwidth at the range of 1000-2000 nm can still be realized by optimizing the parameters of the ultrathin hybrid metamaterial with: P = 500 nm, L 1 = 290 nm, W 1 = 100 nm, L 2 = 300 nm , L 3 = 370 nm, W 2 = 50 nm, W 3 = 50 nm, s = 50 nm, t 1 = 30 nm, and t 2 = 250 nm. Moreover, the practical fabrication of such ultrathin hybrid metamaterial can be realized by using electron-beam lithography, evaporation deposition of gold, and plasma-enhanced chemical vapor deposition of silicon dioxide [24].…”

Section: Design and Characteristicsmentioning

confidence: 99%

High Performance Broadband Asymmetric Polarization Conversion Due to Polarization-dependent Reflection

Chen

Liu

et al. 2015

Plasmonics

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We present the underlying theory, the design specifications, and the simulated demonstration of a high performance broadband asymmetric polarization conversion composed of an L-shaped gold particle and a gold nanoantenna array for the near-infrared regime. It can transform linearly polarized light to its cross polarization in the transmission mode for one propagation direction and efficiently reflect the light for the opposite propagation direction. The broadband asymmetric polarization conversion can be attributed to the polarization-dependent reflection of the nanoantenna array, which enhances the polarization conversion efficiency of the L-shaped particle and makes it asymmetric and devisable. This work offers a further step in the development of a high efficiency broadband optical activity device.

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Broadband diodelike asymmetric transmission of linearly polarized light in ultrathin hybrid metamaterial

Cited by 60 publications

References 25 publications

A review of metasurfaces: physics and applications

A review of metasurfaces: physics and applications

Polarization State Manipulation of Electromagnetic Waves with Metamaterials and Its Applications in Nanophotonics

High Performance Broadband Asymmetric Polarization Conversion Due to Polarization-dependent Reflection

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