Diodelike Asymmetric Transmission of Linearly Polarized Waves Using Magnetoelectric Coupling and Electromagnetic Wave Tunneling

Mutlu, Mehmet; Akosman, Ahmet E.; Serebryannikov, Andriy E.; Özbay, Ekmel

doi:10.1103/physrevlett.108.213905

Cited by 213 publications

(199 citation statements)

References 20 publications

Supporting

Mentioning

195

Contrasting

Unclassified

Order By: Relevance

“…This is particularly true for the weak crosspolarization transmission(less than 0.3) of the asymmetric SRR whose element size reaches λ 0 /3.3 at the resonance [14]. To realize a Diodelike asymmetric transmission, namely unity transmission of certain linear polarization in one direction while zero transmission in the opposite direction, electromagnetic wave tuning was suggested to be accompanied with the magnetoelectric coupling [15]. This strategy affords us indeed a versatile avenue to manipulate propagation of EM waves and would be excellent if the chiral element size was compact.…”

Section: Near Diodelike Asymmetric Transmission For Spectrum Filtermentioning

confidence: 99%

“…Asymmetric transmission for linear polarization is unusual and appealing polarization functionalities studied in recent years [11][12][13][14][15]. In [11], a thin structure composed of three-dimensional metaatoms allowing asymmetric transmission for an arbitrary including linear polarization of the incident electromagnetic wave was proposed without any rotational symmetry.…”

Section: Near Diodelike Asymmetric Transmission For Spectrum Filtermentioning

confidence: 99%

“…For a criterion set for asymmetric transmission of linearly polarized waves only, additional requirement of t xx = t yy should be compulsorily satisfied. To go step further for a perfect or near diodelike asymmetric transmission of linearly polarized waves, we require that t xy ≈ 1 and t yx ≈ 0 or t xy ≈ 0 and t yx ≈ 1 [15] in this work. The large asymmetric transmission for the linear polarization also incurs the quite distinguished total transmission of x or y-polarized EM wave defined by T x = t xx + t yx and T y = t yy + t xy , respectively along two opposite directions of propagation.…”

Section: Fundamentals Theory and Designmentioning

confidence: 99%

“…due to their unique electromagnetic (EM) properties and a wider set of functionalities such as giant optical activity [1], elliptical or circular dichroism [2], giant gyrotropy [3], negative refraction without simultaneous negative permittivity and permeability [4][5][6][7][8][9], and asymmetric transmission [10][11][12][13][14][15], etc. The unusual polarization functionalities and chirality not found in natural medium arise from the magneto-electric cross coupling of chiral structures due to their bianisotropy and lack of any mirror symmetry.…”

mentioning

confidence: 99%

“…Among them, several chiral structures have been available to tailor the cross coupling between electric and magnetic fields such as the commonly utilized U-shaped structures [1,15,21,29], conjugated metallic pairs and conjugated gammadion resonators combining cut-wire pairs [27,28], twisted rosettes [2,3,5], cross-wire structure (gammadion) and its complementary variations [9,11,20,31], twisted foil structure [7,26], L-shaped chiral structure [8], fishscale pattern [10,11], twisted split ring resonators (SRRs), twist Hilbert patterns, and twisted complementary SRRs with symmetric or asymmetric geometry [12-14, 23, 24, 30, 33], Metallic helix array [16,18], stacked nanorod arrays [19], twist arc structure [22], and I-shaped structure [25]. However, most "meta-atoms" or "meta-molecule" of CMMs are extremely large, this is especially true when arrange the four U-shaped rings in four-fold rotational symmetry (C4) to obtain the optical activity insensitive to the linear polarization of the incident wave.…”

mentioning

confidence: 99%

See 4 more Smart Citations

Dual-Band Circular Polarizer and Asymmetric Spectrum Filter Using Ultrathin Compact Chiral Metamaterial

Xu¹,

Wang²,

Qi³

et al. 2013

PIER

View full text Add to dashboard Cite

Abstract-A compact chiral metamaterial is proposed and comprehensively investigated that can achieve circularly polarized wave emission from linearly polarized incident wave (giant circular dichroism) over dual bands and near Diodelike asymmetric transmission of linearly polarized waves. The chiral metamaterial also features exceptionally strong optical activity. For verification, two proof-of-concept slab samples are designed, fabricated and measured at microwave frequencies. Numerical and experimental results agree well, indicating that the former dual-band circular polarizer features high conversion efficiency around 8.1 and 9.9 GHz in addition to large polarization extinction ratio of more than 16 dB, while the latter chiral sample enables the near 90% cross-polarization transmission in one direction and almost 10% transmission in the opposite direction. The block "meta-atom" that utilized to build the ultrathin CMM slab is less than λ 0 /6.73 evaluated at operating frequency. Good performances of the two chiral slabs with simple and compact package suggest promising applications in the circular polarizers (circulators) and transparent linear polarization transformers or spectrum filters (isolators) that need to be interpreted with other compact devices.

show abstract

Section: Near Diodelike Asymmetric Transmission For Spectrum Filtermentioning

confidence: 99%

Section: Near Diodelike Asymmetric Transmission For Spectrum Filtermentioning

confidence: 99%

Section: Fundamentals Theory and Designmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

See 3 more Smart Citations

Dual-Band Circular Polarizer and Asymmetric Spectrum Filter Using Ultrathin Compact Chiral Metamaterial

Xu¹,

Wang²,

Qi³

et al. 2013

PIER

View full text Add to dashboard Cite

show abstract

Directional Janus Metasurface

et al. 2019

View full text Add to dashboard Cite

Janus monolayers, a class of two‐faced 2D materials, have received significant attention in electronics, due to their unusual conduction properties stemming from their inherent out‐of‐plane asymmetry. Their photonic counterparts recently allowed for the control of hydrogenation/dehydrogenation processes, yielding drastically different responses for opposite light excitation spins. A passive Janus metasurface composed of cascaded subwavelength anisotropic impedance sheets is demonstrated. By introducing a rotational twist in their geometry, asymmetric transmission with the desired phase function is realized. Their broken out‐of‐plane symmetry realizes different functions for opposite propagation directions, enabling direction‐dependent versatile functionalities. A series of passive Janus metasurfaces that enable functionalities including one‐way anomalous refraction, one‐way focusing, asymmetric focusing, and direction‐controlled holograms are experimentally demonstrated.

show abstract

Polarization Control in Terahertz Metasurfaces with the Lowest Order Rotational Symmetry

Cong

Zhang

et al. 2015

Advanced Optical Materials

View full text Add to dashboard Cite

wileyonlinelibrary.com COMMUNICATIONwith specifi c symmetry to control the polarization state of the incoming light. Owing to the 2D feature of metasurfaces, we could degenerate the tensor χ from complex 3 × 3 matrix to 2 × 2 matrix. [ 10 ] The transmission response through a metasurface can be described by transmittance, polarization ellipses, averaged polarization rotation, and polarization conversion, [22][23][24][25] which can easily be determined from the frequencydependent 2 × 2 Jones matrix. [ 26,27 ] In the recent past, there have been several works on chiral metamolecules that consist of 2D and 3D designs. [ 28,29 ] For the 2D metasurfaces with planar chirality, the most commonly employed designs have fourfold rotational symmetry. [30][31][32][33] Asymmetric transmission of circular polarization in planar metamaterial structures has been discussed in the past. [34][35][36][37][38][39] Another approach to obtain the optical activity by planar metasurfaces is to tilt the metamaterial plane with respect to the incident light so that the excited magnetic and electric dipoles in the asymmetric metamolecule interact with each other. [ 40 ] However, the optical activity and birefringence are not strong enough in these metamaterials to have a functionality such as a circular polarizer and polarization rotator. Therefore, 3D designs and multilayer metamaterials were proposed to improve the optical activity and birefringence. [ 31,41,42 ] Circular polarizers with broadband operation were also realized due to the giant circular dichroism of the 3D and multilayer designs. A major advantage of 3D chiral metamolecules over planar chiral design is that the asymmetric transmission of linearly polarized light can be achieved by breaking the symmetry of the unit cell in the propagation direction. [43][44][45] However, the complex fabrication process limits the application of these devices to a large extent. Therefore, a simple planar design with giant optical activity and asymmetric transmission of circularly polarized light becomes highly desirable.Unlike the previously employed designs, we propose a planar metamolecule with the lowest order rotational symmetry, i.e., twofold rotational symmetry, and demonstrate a giant optical activity and asymmetric transmission of the terahertz waves. We observed a giant cross polarization transmission response, which is the most straightforward way to determine the optical activity, the polarization control as well as realize high effi ciency wave defl ection using planar metasurfaces. The major advantage of the twofold rotational symmetric planar structure is due to the additional degree of freedom that allows us to tailor the optical axes of the metamolecule that can in turn modulate the cross polarization transmission amplitude. By varying the orientation of the split gaps in the split-ring resonator (SRR) metamolecule and preserving the rotational symmetry, the intrinsic optical activity and asymmetric transmission is easily modulated. The optimized design allows the strongest op...

show abstract

Diodelike Asymmetric Transmission of Linearly Polarized Waves Using Magnetoelectric Coupling and Electromagnetic Wave Tunneling

Cited by 213 publications

References 20 publications

Dual-Band Circular Polarizer and Asymmetric Spectrum Filter Using Ultrathin Compact Chiral Metamaterial

Dual-Band Circular Polarizer and Asymmetric Spectrum Filter Using Ultrathin Compact Chiral Metamaterial

Directional Janus Metasurface

Polarization Control in Terahertz Metasurfaces with the Lowest Order Rotational Symmetry

Contact Info

Product

Resources

About