120 citations · 479 across the 23 of their papers we have counts for
23 papers
AAA rational approximation for scatterometry of nanoscale gratings
Livius Leibl, Viktoriia Sytenko, Rana Demircioglu +2
We investigate the applicability of AAA rational approximation to scatterometry-related response functions of nanoscale gratings. A silicon line grating with material dispersion is…
Design of monolithic microcavities for enhancing organic quantum emitters
Tim Hebenstreit, Jaime Gimeno Balaguer, Fridtjof Betz +6
Single organic molecules are a well-established platform for high-quality single-photon generation: they can emit lifetime-limited photons with high purity and indistinguishability…
Pole-Expansion of the T-Matrix Based on a Matrix-Valued AAA-Algorithm
Jan David Fischbach, Fridtjof Betz, Lukas Rebholz +6
The transition matrix (T-matrix) is a complete description of an object's linear scattering response. As such, it has found wide adoption for the theoretical and computational desc…
High Purcell enhancement in all-TMDC nanobeam resonator designs with active monolayers for nanolasers
Felix Binkowski, Aris Koulas-Simos, Fridtjof Betz +9
We propose a nanobeam resonator incorporating an active monolayer, designed to achieve a high Purcell enhancement. The resonator is fully composed of transition-metal-dichalcogenid…
Uncovering hidden resonances in non-Hermitian systems with scattering thresholds
Fridtjof Betz, Felix Binkowski, Jan David Fischbach +5
The points where diffraction orders emerge or vanish in the propagating spectrum of periodic non-Hermitian systems are referred to as scattering thresholds. Close to these branch p…
Resonance modes in microstructured photonic waveguides: Efficient and accurate computation based on AAA rational approximation
Felix Binkowski, Fridtjof Betz, Martin Hammerschmidt +2
We present a framework for the efficient and accurate computation of resonance modes in photonic waveguides. The framework is based on AAA rational approximation with the applicati…
A framework to compute resonances arising from multiple scattering
Jan David Fischbach, Fridtjof Betz, Nigar Asadova +8
Numerous natural and technological phenomena are governed by resonances. In nanophotonics, resonances often result from the interaction of several optical elements. Controlling the…
Efficient rational approximation of optical response functions with the AAA algorithm
Fridtjof Betz, Martin Hammerschmidt, Lin Zschiedrich +2
We introduce a theoretical framework for the rational approximation of optical response functions in resonant photonic systems. The framework is based on the AAA algorithm and furt…
Fabrication uncertainty guided design optimization of a photonic crystal cavity by using Gaussian processes
Matthias Plock, Felix Binkowski, Lin Zschiedrich +2
We present a fabrication uncertainty aware and robust design optimization approach that can be used to obtain robust design estimates for nonlinear, nonconvex, and expensive model…
Computing eigenfrequency sensitivities near exceptional points
Felix Binkowski, Julius Kullig, Fridtjof Betz +4
Exceptional points are spectral degeneracies of non-Hermitian systems where both eigenfrequencies and eigenmodes coalesce. The eigenfrequency sensitivities near an exceptional poin…
Poles and zeros in non-Hermitian systems: Application to photonics
Felix Binkowski, Fridtjof Betz, Rémi Colom +2
Resonances are essential for understanding the interactions between light and matter in photonic systems. The real frequency response of the non-Hermitian systems depends on the co…
Applying a Riesz-projection-based contour integral eigenvalue solver to compute resonance modes of a VCSEL
Lilli Kuen, Fridtjof Betz, Felix Binkowski +6
We investigate the calculation of resonance modes of a VCSEL with a Riesz projection eigenvalue solver. The eigenvalue solver is based on the principle of contour integration where…
Resonance expansion of quadratic quantities with regularized quasinormal modes
Fridtjof Betz, Felix Binkowski, Martin Hammerschmidt +2
Resonance expansions are an intuitive approach to capture the interaction of an optical resonator with light. Here, we present a quasinormal mode expansion approach for quadratic o…
Computation of eigenfrequency sensitivities using Riesz projections for efficient optimization of nanophotonic resonators
Felix Binkowski, Fridtjof Betz, Martin Hammerschmidt +3
Resonances are omnipresent in physics and essential for the description of wave phenomena. We present an approach for computing eigenfrequency sensitivities of resonances. The theo…
Enhanced Purcell factor for nanoantennas supporting interfering resonances
Rémi Colom, Felix Binkowski, Fridtjof Betz +2
We study the effect of coupled resonances and quasi-bound states in the continuum (quasi-BICs) on the Purcell factor in dielectric resonant nanoantennas. We analyze numerically int…
Hot electron generation through near-field excitation of plasmonic nanoresonators
Felix Binkowski, Tong Wu, Philippe Lalanne +2
We theoretically study hot electron generation through the emission of a dipole source coupled to a nanoresonator on a metal surface. In our hybrid approach, we solve the time-harm…
Long- and Short-Ranged Chiral Interactions in DNA Assembled Plasmonic Chains
Kevin Martens, Felix Binkowski, Linh Nguyen +4
Molecular chirality plays a crucial role in innumerable biological processes. The chirality of a molecule can typically be identified by its characteristic optical response, the ci…
Quasinormal mode expansion of optical far-field quantities
Felix Binkowski, Fridtjof Betz, Rémi Colom +3
Quasinormal mode (QNM) expansion is a popular tool to analyze light-matter interaction in nanoresonators. However, expanding far-field quantities such as the energy flux is an open…
Modal analysis for nanoplasmonics with nonlocal material properties
Felix Binkowski, Lin Zschiedrich, Martin Hammerschmidt +1
Plasmonic devices with feature sizes of a few nanometers exhibit effects which can be described by the nonlocal hydrodynamic Drude model. We demonstrate how to exploit contour inte…
Heuristic Modeling of Strong Coupling in Plasmonic Resonators
Günter Kewes, Felix Binkowski, Sven Burger +2
Strong coupling of plasmonic excitations and dipolar emitters, such as organic molecules, have been studied extensively in the last years. The questions whether strong coupling can…
Quasinormal mode solvers for resonators with dispersive materials
P. Lalanne, W. Yan, A. Gras +16
Optical resonators are widely used in modern photonics. Their spectral response and temporal dynamics are fundamentally driven by their natural resonances, the so-called quasinorma…
A Riesz-projection-based method for nonlinear eigenvalue problems
Felix Binkowski, Lin Zschiedrich, Sven Burger
We propose an algorithm for general nonlinear eigenvalue problems to compute physically relevant eigenvalues within a chosen contour. Eigenvalue information is explored by contour…
Riesz-projection-based theory of light-matter interaction in dispersive nanoresonators
Lin Zschiedrich, Felix Binkowski, Niko Nikolay +3
We introduce a theory to analyze the behavior of light emitters in nanostructured environments rigorously. Based on spectral theory, the approach opens the possibility to quantify…