caa a22 4500 445370459 CHVBK 20180317142944.0 cr unu---uuuuu 170323e20111001xx s 000 0 eng 10.1007/s00340-011-4766-y doi (NATIONALLICENCE)springer-10.1007/s00340-011-4766-y Investigation of the nonlinear optical properties of metamaterials by second harmonic generation [Elektronische Daten] [M. Gentile, M. Hentschel, R. Taubert, H. Guo, H. Giessen, M. Fiebig] Nonlinear optical spectroscopy is applied to two types of metamaterials: (i) variations of split-ring resonators fabricated as periodic two-dimensional arrays of gold on SiO2, and (ii) gratings of periodically spaced straight wires of gold on multiferroic hexagonal single crystals from the RMnO3 family. Optical second harmonic generation (SHG) on samples of type (i) is used to characterize the nonlinear response of metamaterials in dependence of the photon energy and the size, shape, and symmetry of the nanoscopic building blocks constituting the metamaterials. We find a complex dependence of the SHG spectra on the design parameters that requires an in-depth theoretical analysis. SHG is applied to samples of type (ii) to enhance the nonlinear optical performance of functional materials by writing a metamaterial acting as optical catalyst on top. We observe an enhancement of the SHG signal induced by the ferroelectric order of the RMnO3 crystals, yet with pronounced variations between samples. Measurements of both types, (i) and(ii), show that a comprehensive understanding of the nonlinear optical properties of metamaterials requires one to go beyond a macroscopic symmetry treatment. In fact, structural inhomogeneities on the level of the nanoscopic building blocks have a major impact. Springer-Verlag, 2011 Gentile M. Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Nussallee 14-16, 53115, Bonn, Germany aut Hentschel M. 4. Physikalisches Institut und Research Center SCoPE, Universität Stuttgart, Pfaffenwaldring 57, 70550, Stuttgart, Germany aut Taubert R. 4. Physikalisches Institut und Research Center SCoPE, Universität Stuttgart, Pfaffenwaldring 57, 70550, Stuttgart, Germany aut Guo H. 4. Physikalisches Institut und Research Center SCoPE, Universität Stuttgart, Pfaffenwaldring 57, 70550, Stuttgart, Germany aut Giessen H. 4. Physikalisches Institut und Research Center SCoPE, Universität Stuttgart, Pfaffenwaldring 57, 70550, Stuttgart, Germany aut Fiebig M. Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Nussallee 14-16, 53115, Bonn, Germany aut Applied Physics B Springer-Verlag 105/1(2011-10-01), 149-162 0946-2171 105:1<149 2011 105 340 https://doi.org/10.1007/s00340-011-4766-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00340-011-4766-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Gentile M. Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Nussallee 14-16, 53115, Bonn, Germany aut NATIONALLICENCE 700 1- Hentschel M. 4. Physikalisches Institut und Research Center SCoPE, Universität Stuttgart, Pfaffenwaldring 57, 70550, Stuttgart, Germany aut NATIONALLICENCE 700 1- Taubert R. 4. Physikalisches Institut und Research Center SCoPE, Universität Stuttgart, Pfaffenwaldring 57, 70550, Stuttgart, Germany aut NATIONALLICENCE 700 1- Guo H. 4. Physikalisches Institut und Research Center SCoPE, Universität Stuttgart, Pfaffenwaldring 57, 70550, Stuttgart, Germany aut NATIONALLICENCE 700 1- Giessen H. 4. Physikalisches Institut und Research Center SCoPE, Universität Stuttgart, Pfaffenwaldring 57, 70550, Stuttgart, Germany aut NATIONALLICENCE 700 1- Fiebig M. Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Nussallee 14-16, 53115, Bonn, Germany aut NATIONALLICENCE 773 0- Applied Physics B Springer-Verlag 105/1(2011-10-01), 149-162 0946-2171 105:1<149 2011 105 340 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer