Stefan Linden
University of Bonn
194 Papers
1.5K Citations
Stefan Linden is an academic researcher from University of Bonn. The author has contributed to research in topics: Metamaterial & Split-ring resonator. The author has an hindex of 54, co-authored 190 publications. Previous affiliations of Stefan Linden include University of Marburg & Karlsruhe Institute of Technology.
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Papers
Gold Helix Photonic Metamaterial as Broadband Circular Polarizer
Justyna K. Gansel,Michael Thiel,Michael S. Rill,Manuel Decker,Klaus Bade,Volker Saile,Georg von Freymann,Stefan Linden,Martin Wegener +8 more
TL;DR: This work investigated propagation of light through a uniaxial photonic metamaterial composed of three-dimensional gold helices arranged on a two-dimensional square lattice that is scalable to other frequency ranges and can be used as a compact broadband circular polarizer.
Magnetic Response of Metamaterials at 100 Terahertz
Stefan Linden,C. Enkrich,Martin Wegener,Jiangfeng Zhou,Thomas Koschny,Thomas Koschny,Costas M. Soukoulis,Costas M. Soukoulis +7 more
TL;DR: The measured optical spectra of the nanofabricated gold structures come very close to the theoretical expectations and additional numerical simulations show that the structures exhibit a frequency range with negative permeability for a beam configuration in which the magnetic field couples to the LC resonance.
Negative Refractive Index at Optical Wavelengths
TL;DR: Metamaterials are designed to have structures that provide optical properties not found in nature, and if their capacity can be extended, new kinds of devices for imaging and control of light will be possible.
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Magnetic Metamaterials at Telecommunication and Visible Frequencies
C. Enkrich,Martin Wegener,Stefan Linden,Sven Burger,Lin Zschiedrich,Frank Schmidt,Jiangfeng Zhou,Th. Koschny,Costas M. Soukoulis,Costas M. Soukoulis +9 more
TL;DR: This work identifies a novel higher-order magnetic resonance at around 370 THz (800 nm wavelength) that evolves out of the Mie resonance for oblique incidence and shows that the structures allow for a negative magnetic permeability.
Simultaneous Negative Phase and Group Velocity of Light in a Metamaterial
TL;DR: This work investigated the propagation of femtosecond laser pulses through a metamaterial that has a negative index of refraction for wavelengths around 1.5 micrometers and directly inferred the phase time delay from the interference fringes of a Michelson interferometer.