Metamaterials, scattering of complex structures

Metamaterials, scattering of complex structures

When using single subwavelength structures to control scattering and emission of light, a very important consideration is what electric and magnetic multipole resonances a designed nano-object supports, and how these properties imprint on scattering and emission of light. Once subwavelength objects are placed into arrays, the question is how these resonances conspire to collectively ensure a functional metasurface that shapes the wavefront or polarization of impinging light, or to realize a functional metamaterial with desired effective electric and magnetic material properties, or to realize suitable diffraction effects.
This analysis defines two essential questions in nanophotonics: how shape and material composition of an object results in electric and magnetic multipole moments on one hand, and on the other hand how interactions between simple building blocks gives interesting emergent optical properties. In our group, we perform theory and experiments in these directions. In particular, we are very interested in how shape gives rise to artificial optical magnetism, optical activity, and chiroptical effects, and how fundamental constraints such as energy conservation in scattering constrain the available degrees of freedom.

Focusing on tractable understanding with simple models for building blocks that can enter in self-consistent multiple scattering theories, we also study emergent optical scattering and emission characteristics of oligomers and lattices of building blocks. Also, we are interested in the interplay with complex surroundings, e.g., waveguides and cavities that funnel scattering, or structures that preferentially enhance magnetic or electric fields. Our theory tools include Green function methods, surface-integral equation methods multiple scattering point dipole codes, grating and photonic crystal plane wave codes, and fullwave modeling. Currently we are exploring the use of Quasi-Normal-Mode (QNM) expansion methods with the group of Lalanne.

See:

[94] A. H. Schokker, F. van Riggelen, Y. Hadad, A. Alù, and A. F. Koenderink, Systematic Study of the Hybrid Plasmonic-Photonic Band Structure Underlying Lasing Action of Diffractive Plasmon Particle Lattices, Phys. Rev. B 95, 085409, (2017). (p)reprint DOI
[89] A. Kwadrin, C. I. Osorio, and A. F. Koenderink, Backaction in Metasurface Etalons, Phys. Rev. B 93, 104301, (2016). (p)reprint DOI
[85] P. Lunnemann and A. F. Koenderink, The Local Density of Optical States of a Metasurface, Sci. Rep. 6, 20655, (2016). (p)reprint DOI
[76] F. B. Arango, R. Thijssen, B. Brenny, T. Coenen, and A. F. Koenderink, Robustness of Plasmon Phased Array Nanoantennas to Disorder, Sci. Rep. 5, 10911, (2015). (p)reprint DOI
[73] P. Lunnemann and A. F. Koenderink, Dispersion of Guided Modes in Two-Dimensional Split Ring Lattices, Phys. Rev. B 90, 245416, (2014). (p)reprint DOI
[72] S. R. K. Rodriguez, F. B. Arango, T. P. Steinbusch, M. A. Verschuuren, A. F. Koenderink, and J. G. Rivas, Breaking the Symmetry of Forward-Backward Light Emission with Localized and Collective Magnetoelectric Resonances in Arrays of Pyramid-Shaped Aluminum Nanoparticles, Phys. Rev. Lett. 113, 247401, (2014). (p)reprint DOI
[67] F. B. Arango, T. Coenen, and A. F. Koenderink, Underpinning Hybridization Intuition for Complex Nanoantennas By Magnetoelectric Quadrupolar Polarizability Retrieval, ACS Photonics 1, 444–453, (2014). (p)reprint DOI
[65] A. Kwadrin and A. F. Koenderink, Diffractive Stacks of Metamaterial Lattices with a Complex Unit Cell: Self-Consistent Long-Range Bianisotropic Interactions in Experiment And Theory, Phys. Rev. B 89, 045120, (2014). (p)reprint DOI
[60] F. B. Arango and A. F. Koenderink, Polarizability Tensor Retrieval for Magnetic and Plasmonic Antenna Design, New. J. Phys. 15, 073023, (2013). (p)reprint DOI
[56] A. Kwadrin and A. F. Koenderink, Probing the Electrodynamic Local Density of States with Magnetoelectric Point Scatterers, Phys. Rev. B 87, 125123, (2013). (p)reprint DOI
[47] I. Sersic, M. A. van de Haar, F. B. Arango, and A. F. Koenderink, Ubiquity of Optical Activity in Planar Metamaterial Scatterers, Phys. Rev. Lett. 108, 223903, (2012). (p)reprint DOI
[46] M. Frimmer, T. Coenen, and A. F. Koenderink, Signature of a Fano Resonance in a Plasmonic Metamolecule’s Local Density of Optical States, Phys. Rev. Lett. 108, 077404, (2012). (p)reprint DOI
[40] I. Sersic, C. Tuambilangana, T. Kampfrath, and A. F. Koenderink, Magnetoelectric Point Scattering Theory for Metamaterial Scatterers, Phys. Rev. B 83, 245102, (2011). (p)reprint DOI