Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Helmholtz Institute JenaDE407 papers
- Centre National de la Recherche ScientifiqueFR249 papers
- GSI Helmholtz Centre for Heavy Ion ResearchDE169 papers
- California Institute of TechnologyUS161 papers
- Max Planck Institute for Gravitational PhysicsDE155 papers
- Pennsylvania State UniversityUS147 papers
- Fraunhofer Institute for Applied Optics and Precision EngineeringDE146 papers
- Australian National UniversityAU139 papers
- Max Planck Institute for AstronomyDE138 papers
- University of CambridgeGB138 papers
- Goddard Space Flight CenterUS119 papers
- Leibniz University HannoverDE115 papers
16 papers · 2 filters
Two-dimensional solitons at interfaces between binary superlattices and homogeneous lattices
M. Heinrich, Y. V. Kartashov, L. P. R. Ramirez +7
We report on the experimental observation of two-dimensional surface solitons residing at the interface between a homogeneous square lattice and a superlattice that consists of alt…
Observation of two-dimensional superlattice solitons
M. Heinrich, Y. V. Kartashov, L. P. R. Ramirez +7
We observe experimentally two-dimensional solitons in superlattices comprising alternating deep and shallow waveguides fabricated via the femtosecond laser direct writing technique…
Doubly resonant optical nanoantenna arrays for polarization resolved measurements of surface-enhanced Raman scattering
J. Petschulat, D. Cialla, N. Janunts +9
We report that rhomb-shaped metal nanoantenna arrays support multiple plasmonic resonances, making them favorable bio-sensing substrates. Besides the two localized plasmonic dipole…
Compression of ultrashort UV pulses in a self-defocusing gas
L. Berge, C. Koehler, S. Skupin
Compression of UV femtosecond laser pulses focused into a gas cell filled with xenon is reported numerically. With a large negative Kerr index and normal dispersion, xenon promotes…
Multipole nonlinearity of metamaterials
Joerg Petschulat, Christoph Menzel, Arkadi Chipouline +4
We report on the linear and nonlinear optical response of metamaterials evoked by first and second order multipoles. The analytical ground on which our approach bases permits for n…
A simple and versatile analytical approach for planar metamaterials
J. Petschulat, A. Chipouline, A. Tuennermann +5
We present an analytical model which permits the calculation of effective material parameters for planar metamaterials consisting of arbitrary unit cells (metaatoms) formed by a se…
Analogue of Electromagnetically Induced Transparency in a Terahertz Metamaterial
Sher-Yi Chiam, Andrew A Bettiol, Ranjan Singh +3
We experimentally demonstrate at terahertz frequencies that a planar metamaterial exhibits a spectral response resembling electromagnetically induced transparency. The metamaterial…
Nonlinearity-induced broadening of resonances in dynamically modulated couplers
A. Szameit, Y. V. Kartashov, M. Heinrich +7
We report the observation of nonlinearity-induced broadening of resonances in dynamically modulated directional couplers. When the refractive index of the guiding channels in the c…
Terahertz metamaterial with asymmetric transmission
R. Singh, E. Plum, C. Menzel +6
We show for the first time that a planar metamaterial, an array of coupled metal split-ring resonators with a unit cell lacking mirror symmetry, exhibits asymmetric transmission of…
Validity of effective material parameters for optical fishnet metamaterials
Christoph Menzel, Thomas Paul, Carsten Rockstuhl +3
Although optical metamaterials that show artificial magnetism are mesoscopic systems, they are frequently described in terms of effective material parameters. But due to intrinsic…
Discrete Family of Dissipative Soliton Pairs in Mode-Locked Fiber Lasers
Aleksandr Zavyalov, Rumen Iliew, Oleg Egorov +1
We numerically investigate the formation of soliton pairs (bound states) in mode-locked fiber ring lasers. In the distributed model (complex cubic-quintic Ginzburg-Landau equation)…
Observation of two-dimensional coherent surface vector lattice solitons
M. Heinrich, Y. V. Kartashov, A. Szameit +6
We report the first experimental observation of vector surface solitons, which form at the edge and in the corner of two-dimensional laser-written waveguide arrays. These elliptica…
Inhibition of light tunneling in waveguide arrays
A. Szameit, Y. V. Kartashov, F. Dreisow +7
We report the observation of almost perfect light tunneling inhibition at the edge and inside laser-written waveguide arrays due to band collapse. When the refractive index of the…
Observation of two-dimensional defect surface solitons
A. Szameit, Y. V. Kartashov, M. Heinrich +7
We report on the experimental observation of two-dimensional solitons located in a defect channel at the surface of a hexagonal waveguide array. The threshold power for the excitat…
Soliton excitation in waveguide arrays with an effective intermediate dimensionality
A. Szameit, Y. V. Kartashov, F. Dreisow +7
We reveal and observe experimentally significant modifications undertaken by discrete solitons in waveguide lattices upon the continuous transformation of the lattice structure fro…
Coupling between a dark and a bright eigenmode in a terahertz metamaterial
Ranjan Singh, Carsten Rockstuhl, Falk Lederer +1
Terahertz time domain spectroscopy and rigorous simulations are used to probe the coupling between a dark and a bright plasmonic eigenmode in a metamaterial with broken symmetry. T…