190 citations · 905 across the 12 of their papers we have counts for
13 papers
THz emission from Fe/Pt spintronic emitters with L1-FePt alloyed interface
Laura Scheuer, Moritz Ruhwedel, Dimitris Karfaridis +10
Recent developments in nanomagnetism and spintronics have enabled the use of ultrafast spin physics for terahertz (THz) emission. Spintronic THz emitters, consisting of ferromagnet…
Correlation of interface transmission in THz spintronic emitters with spin mixing conductance in spin pumping experiments
Evangelos Th. Papaioannou, Laura Scheuer, Moritz Ruhwedel +3
The field of THz spintronics is a novel direction in the research field of spintronics that combines magnetism with optical physics and ultrafast photonics. The experimental scheme…
Modification of spintronic terahertz emitter performance through defect engineering
Dennis M. Nenno, Laura Scheuer, Dominik Sokoluk +10
Spintronic ferromagnetic/non-magnetic heterostructures are novel sources for the generation of THz radiation based on spin-to-charge conversion in the layers. The key technological…
Efficient Terahertz Generation Using Fe/Pt Spintronic Emitters Pumped at Different Wavelengths
Evangelos Th. Papaioannou, Garik Torosyan, Sascha Keller +6
Recent studies in spintronics have highlighted ultrathin magnetic metallic multilayers as a novel and very promising class of broadband terahertz radiation sources. Such spintronic…
Optimized Spintronic Terahertz Emitters Based on Epitaxial Grown Fe/Pt Layer Structures
Garik Torosyan, Sascha Keller, Laura Scheuer +2
We report on generation of pulsed broadband terahertz radiation utilizing the inverse spin Hall effect in Fe/Pt bilayers on MgO and sapphire substrates. The emitter was optimized w…
In-Plane Focusing of Terahertz Surface Waves on a Gradient Index Metamaterial Film
Martin F. Volk, Benjamin Reinhard, Jens Neu +2
We designed and implemented a gradient index metasurface for the in-plane focusing of confined terahertz surface waves. We measured the spatial propagation of the surface waves by…
Metamaterial near-field sensor for deep-subwavelength thickness measurements and sensitive refractometry in the terahertz frequency range
Benjamin Reinhard, Klemens M. Schmitt, Viktoria Wollrab +3
We present a metamaterial-based terahertz (THz) sensor for thickness measurements of subwavelength-thin materials and refractometry of liquids and liquid mixtures. The sensor opera…
Hybridization Induced Transparency in composites of metamaterials and atomic media
Peter Weis, Juan Luis Garcia-Pomar, René Beigang +1
We report hybridization induced transparency (HIT) in a composite medium consisting of a metamaterial and a dielectric. We develop an analytic model that explains HIT by coherent c…
Nonlinearity and optical bistability caused by local field effects in the interaction between a two level atomic system and a metamaterial
J. L. Garcia-Pomar, R. Beigang, M. Rahm
We present a theoretical analysis of the nonlinear response of a metamaterial consisting of an array of split ring resonators coupled to a two level atomic system (2LS) without inv…
Gradient Index Metamaterial Based on Slot Elements
Oliver Paul, Benjamin Reinhard, Bernd Krolla +2
We present a gradient-index (GRIN) metamaterial based on an array of annular slots. The structure allows a large variation of the effective refractive index under normal-to-plane i…
Experimental and numerical studies of terahertz surface waves on a thin metamaterial film
Benjamin Reinhard, Oliver Paul, Rene Beigang +1
We present experimental and numerical studies of localized terahertz surface waves on a subwavelength-thick metamaterial film consisting of in-plane split-ring resonators. A simple…
Highly Selective Terahertz Bandpass Filters Based on Trapped Mode Excitation
Oliver Paul, Rene Beigang, Marco Rahm
We present two types of metamaterial-based spectral bandpass filters for the terahertz (THz) frequency range. The metamaterials are specifically designed to operate for waves at no…
Strongly birefringent cut-wire pair structure as negative index wave plates at THz frequencies
P. Weis, O. Paul, C. Imhof +2
We report a new approach for the design and fabrication of thin wave plates with high transmission in the terahertz (THz) regime. The wave plates are based on strongly birefringent…