The Origin and Limit of Asymmetric Transmission in Chiral Resonators

Nikhil, P.; Alpeggiani, Filippo; Kuipers, L.; Verhagen, Ewold

doi:10.1021/acsphotonics.6b00947

Cited by 20 publications

(10 citation statements)

References 39 publications

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“…, which is affected by the symmetry of the metaatoms. To realize asymmetric transmission of LP light, the mirror symmetries with respect to a plane perpendicular to the propagation direction need to be broken, which is usually implemented by using few-layer metasurfaces [110][111][112][113][128][129][130] . For example, Huang et al proposed a metasurface that can realize asymmetric transmission of LP waves based on few-layer twisted split ring resonators 111 .…”

Section: Manipulating Amplitude and Polarization Of Em Wavesmentioning

confidence: 99%

Multidimensional manipulation of wave fields based on artificial microstructures

Zhang¹,

Liu²,

Cheng³

et al. 2020

Opto-Electronic Advances

112

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Artificial microstructures, which allow us to control and change the properties of wave fields through changing the geometrical parameters and the arrangements of microstructures, have attracted plenty of attentions in the past few decades. Some artificial microstructure based research areas, such as metamaterials, metasurfaces and phononic topological insulators, have seen numerous novel applications and phenomena. The manipulation of different dimensions (phase, amplitude, frequency or polarization) of wave fields, particularly, can be easily achieved at subwavelength scales by metasurfaces. In this review, we focus on the recent developments of wave field manipulations based on artificial microstructures and classify some important applications from the viewpoint of different dimensional manipulations of wave fields. The development tendency of wave field manipulation from single-dimension to multidimensions provides a useful guide for researchers to realize miniaturized and integrated optical and acoustic devices.

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Section: Manipulating Amplitude and Polarization Of Em Wavesmentioning

confidence: 99%

Multidimensional manipulation of wave fields based on artificial microstructures

Zhang¹,

Liu²,

Cheng³

et al. 2020

Opto-Electronic Advances

112

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“…As discussed above, few‐layer metasurfaces have many prominent advantages in realizing asymmetric transmission of electromagnetic waves compared with single‐layer metasurfaces. Although there exist some difficulties in realizing high‐efficiency and broadband asymmetric transmission in the visible region due to the Ohmic losses of plasmonic structures, these problems can hopefully be solved by using dielectric materials …”

Section: Prominent Applications In Few‐layer Metasurfacesmentioning

confidence: 99%

Empowered Layer Effects and Prominent Properties in Few‐Layer Metasurfaces

Chen

Zhang

et al. 2019

Advanced Optical Materials

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applications have been realized based on the metamaterials, such as negative index materials, [3] invisibility cloaks, [4] and zeroindex materials. [5] Nevertheless, metamaterials are usually bulky, difficult to be fabricated, and suffer from high energy losses, which hinder their practical applications in modern photonic systems. In recent years, planar metasurfaces, the 2D equivalents of metamaterials, have attracted plenty of attentions due to their extraordinary abilities in controlling the polarization, amplitude, phase, and dispersion of electromagnetic waves. [6][7][8] Compared with bulk metamaterials, the metasurfaces have many advantages, such as ultrathin thicknesses, low losses, ease of fabrication and integration. Over the past years, single-layer metasurfaces have been widely applied in realizing polarization conversion, [9] beam deflectors, [10,11] metalenses, [12,13] holograms, [14] coding, [15] structural colors, [16,17] nonlinear metasurfaces, [18] and some other applications. Nevertheless, the interactions between lights and ultrathin single-layer metasurfaces are usually limited, resulting in low efficiency and limited controllability in some applications. [19] Moreover, the degrees of freedom for light manipulation provided by a single-layer metasurface are usually not enough in realizing multifunctional devices and some other sophisticated photonic systems.Few-layer metasurface that contains more than one functional layer provides an effective method to overcome the drawbacks of both bulk metamaterials and single-layer metasurfaces. Cheng et al. employed the concept of few-layer metasurfaces to discuss the advantages and emergent functionalities of them in ref. [20]. Few-layer metasurfaces retain the advantages of single-layer metasurfaces and can provide more degrees of freedom to manipulate electromagnetic waves. More importantly, the abundant layer effects, such as the multiple wave interference between layers and the near-field coupling effects, can enhance the interactions between lights and structures and improve the efficiency of few-layer systems. In addition, the combination of different functional layers can produce novel functions that single-layer metasurfaces can hardly realize. For example, by breaking the mirror symmetry along the propagation direction, few-layer metasurfaces can realize asymmetric transmission of linearly polarized lights. [21] By vertically integrating different metasurfaces on one substrate, optical systems with different functions can be miniaturization and integration. Recently, the few-layer metasurfaces have also been extended in the acoustic fields to realize some novel applications, such Metamaterials are 3D artificial structures proposed to surpass conventional natural materials and realize novel functions beyond traditional optical elements. Nevertheless, they are usually bulky and difficult to be fabricated. As 2D equivalents of metamaterials, metasurfaces have been proposed to overcome the drawbacks of metamaterials and fully control the polarizati...

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“…The excitation of enantiomerically sensitive surface plasmons is a collective mode of electron oscillation at the interface of conductor and medium, which is in charge of asymmetric transmission for circularly polarized waves in planar chiral metasurfaces. [17][18][19] As a kind of promising electrically tunable plasmonic material, periodical graphene metasurfaces can excite graphene surface plasmons in the mid-infrared and terahertz (THZ) region. [20][21][22] And for graphene metasurface, novel optical properties are dynamically tunable by changing the Fermi energy through voltage control or the changing intrinsic relaxation time through chemical doping.…”

Section: Introductionmentioning

confidence: 99%