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Andreas Tünnermann
Researcher at Fraunhofer Society
Publications - 1757
Citations - 48543
Andreas Tünnermann is an academic researcher from Fraunhofer Society. The author has contributed to research in topics: Fiber laser & Laser. The author has an hindex of 97, co-authored 1738 publications receiving 43757 citations. Previous affiliations of Andreas Tünnermann include Schiller International University & University of Jena.
Papers
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Optical coupling of fundamental whispering-gallery modes in bispheres
TL;DR: In this paper, it was shown that an attempt to couple two fundamental modes of microspheres would result in a complex multiresonance optical response with the field distribution significantly deviating from predictions of coupled-mode-type theories.
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Influence of Substrate Materials on Nucleation and Properties of Iridium Thin Films Grown by ALD
Paul Schmitt,Vivek Beladiya,Nadja Felde,Pallabi Paul,Felix Otto,Torsten Fritz,Andreas Tünnermann,Adriana Szeghalmi +7 more
TL;DR: In this paper, the nucleation, film growth, and layer properties of atomic layer deposited (ALD) iridium thin films are evaluated on silicon wafers, BK7, fused silica, SiO2, TiO 2, Ta2O5, Ru, Cr, and graphite to understand the influence of various substrate materials.
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Multi-gigawatt ultrashort pulses at high repetition rate and average power from two-stage nonlinear compression.
TL;DR: Numerical simulations, agreeing well with experimental data, yield a peak power of 5.7 GW at a pulse energy of 380 µJ making this an interesting source for high harmonic generation at high repetition rate and average power.
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Scattering Dark States in Multiresonant Concentric Plasmonic Nanorings
Rasoul Alaee,Rasoul Alaee,Dennis Lehr,Robert Filter,Falk Lederer,Ernst-Bernhard Kley,Carsten Rockstuhl,Andreas Tünnermann,Andreas Tünnermann +8 more
TL;DR: In this paper, the authors theoretically and experimentally show that the interference of these resonances causes Fano features and scattering dark states, and they use a simplified dense-array theory to predict the response of arrays of nanoantennas.
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Angular surface solitons in sectorial hexagonal arrays
Alexander Szameit,Yaroslav V. Kartashov,Victor A. Vysloukh,Matthias Heinrich,Felix Dreisow,Thomas Pertsch,Stefan Nolte,Andreas Tünnermann,F. Lederer,Lluis Torner +9 more
TL;DR: In this paper, the experimental observation of corner surface solitons localized at the edges joining planar interfaces of hexagonal waveguide array with uniform nonlinear medium was reported. But the authors did not consider the effect of the face angle on the threshold of soliton excitation.