Perfect Diffraction with Multiresonant Bianisotropic Metagratings

One of the most desirable functions of a diffraction grating is its ability to scatter incident light into a specific diffraction order with near-perfect efficiency. While such asymmetry can be achieved in a variety of ways, for example, by using a sawtooth (blazed) geometry, a recently emerged approach is to use planar metagratings comprised of designer multiresonant periodic units (metamolecules). Here we demonstrate that a bianisotropic metamolecule supporting four resonances of the appropriate symmetry can be used as a building block for achieving perfect diffraction. Coupled-mode analysis shows that these resonant modes provide a small number of orthogonal electromagnetic radiation patterns that are needed to suppress transmission/reflection into all but one diffraction order. Bianisotropy caused by breaking the metamolecule’s mirror symmetry enables a normally incident wave to excite two otherwise “dark” resonant modes through near-field couplings. We design and experimentally realize such bianisotr...

[1]  Andrey E. Miroshnichenko,et al.  Magnetic light , 2012, Scientific reports.

[2]  Y. Kivshar,et al.  Experimental realisation of all-dielectric bianisotropic metasurfaces , 2016 .

[3]  Igal Brener,et al.  Enhanced third-harmonic generation in silicon nanoparticles driven by magnetic response. , 2014, Nano letters.

[4]  Yu Luo,et al.  Bianisotropy and Magnetism in Plasmonic Gratings , 2016, 1604.02397.

[5]  Igal Brener,et al.  Spectrally selective chiral silicon metasurfaces based on infrared Fano resonances , 2014, Nature Communications.

[6]  Yuri S. Kivshar,et al.  Three-dimensional all-dielectric photonic topological insulator , 2017 .

[7]  W. T. Chen,et al.  Metalenses at visible wavelengths: Diffraction-limited focusing and subwavelength resolution imaging , 2016, Science.

[8]  Abdelaziz Boulesbaa,et al.  Nonlinear Fano-Resonant Dielectric Metasurfaces. , 2015, Nano letters.

[9]  A. Arbabi,et al.  Dielectric metasurfaces for complete control of phase and polarization with subwavelength spatial resolution and high transmission. , 2014, Nature nanotechnology.

[10]  Chih-Ming Wang,et al.  High-efficiency broadband anomalous reflection by gradient meta-surfaces. , 2012, Nano letters.

[11]  P. Belov,et al.  Tuning of near‐ and far‐field properties of all‐dielectric dimer nanoantennas via ultrafast electron‐hole plasma photoexcitation , 2016, 1606.05199.

[12]  P. Spinelli,et al.  Broadband omnidirectional antireflection coating based on subwavelength surface Mie resonators , 2012, Nature Communications.

[13]  David Sell,et al.  Ultra-High-Efficiency Anomalous Refraction with Dielectric Metasurfaces , 2018 .

[14]  N. Yu,et al.  Light Propagation with Phase Discontinuities: Generalized Laws of Reflection and Refraction , 2011, Science.

[15]  P. Ginzburg,et al.  Asymmetric backscattering from the hybrid magneto-electric meta particle , 2016, 1608.05980.

[16]  Wei Ting Chen,et al.  Achromatic metalens over 60 nm bandwidth in the visible , 2017, 2017 Conference on Lasers and Electro-Optics (CLEO).

[17]  Xinan Liang,et al.  A Metalens with a Near-Unity Numerical Aperture. , 2018, Nano letters.

[18]  David Sell,et al.  Large-Angle, Multifunctional Metagratings Based on Freeform Multimode Geometries. , 2017, Nano letters.

[19]  I. Brener,et al.  High-efficiency light-wave control with all-dielectric optical Huygens' metasurfaces , 2014, 1405.5038.

[20]  Yuanmu Yang,et al.  All-dielectric metasurface analogue of electromagnetically induced transparency , 2014, Nature Communications.

[21]  Y. Kivshar,et al.  Invited article: Broadband highly-efficient dielectric metadevices for polarization control , 2016 .

[22]  Sheng Liu,et al.  Ultrafast all-optical tuning of direct-gap semiconductor metasurfaces , 2017, Nature Communications.

[23]  I. Brener,et al.  Tailoring directional scattering through magnetic and electric resonances in subwavelength silicon nanodisks. , 2013, ACS nano.

[24]  B. Luk’yanchuk,et al.  Optically resonant dielectric nanostructures , 2016, Science.

[25]  Q. Gong,et al.  Visible-Frequency Dielectric Metasurfaces for Multiwavelength Achromatic and Highly Dispersive Holograms. , 2016, Nano letters.

[26]  Gennady Shvets,et al.  Fano-resonant asymmetric metamaterials for ultrasensitive spectroscopy and identification of molecular monolayers. , 2012, Nature materials.

[27]  Y. Kivshar,et al.  Fano Resonances in All-dielectric Oligomers , 2022 .

[28]  J. Valentine,et al.  Electric and Magnetic Response in Dielectric Dark States for Low Loss Subwavelength Optical Meta Atoms , 2015, 1604.06831.

[29]  Andrea Alu,et al.  A subwavelength plasmonic metamolecule exhibiting magnetic-based optical Fano resonance , 2013, CLEO: 2013.

[30]  L. Lewin.  The electrical constants of a material loaded with spherical particles , 1947 .

[31]  Sergei A. Tretyakov,et al.  Bianisotropic metasurfaces: physics and applications , 2018, Nanophotonics.

[32]  Philippe Lalanne,et al.  Metalenses at visible wavelengths: past, present, perspectives , 2016 .

[33]  S. Maier,et al.  Switchable directional scattering of electromagnetic radiation with subwavelength asymmetric silicon dimers , 2015, Scientific Reports.

[34]  Jingbo Sun,et al.  High-Efficiency All-Dielectric Metasurfaces for Ultracompact Beam Manipulation in Transmission Mode. , 2015, Nano letters.

[35]  A. Arbabi,et al.  Subwavelength-thick lenses with high numerical apertures and large efficiency based on high-contrast transmitarrays , 2014, Nature Communications.

[36]  Boris N. Chichkov,et al.  Optical spectroscopy of single Si nanocylinders with magnetic and electric resonances , 2014, Scientific Reports.

[37]  B. Chichkov,et al.  Demonstration of magnetic dipole resonances of dielectric nanospheres in the visible region. , 2012, Nano letters.

[38]  Gennady Shvets,et al.  Fano-resonant metamaterials and their applications , 2013 .

[39]  G. Shvets,et al.  Interplay Between Optical Bianisotropy and Magnetism in Plasmonic Metamolecules. , 2016, Nano letters.