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Forward simulation of coherent beams on grating structures for coherent scatterometry
Martin Hammerschmidt, Lin Zschiedrich, Lauryna Siaudinyté +3
Modelling the scattering of focused, coherent light by nano-scale structures is oftentimes used to reconstruct or infer geometrical or material properties of structures under inves…
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…
Colloidal Titanium Nitride Nanobars for Broadband Inexpensive Plasmonics and Photochemistry from Visible to Mid-IR Wavelengths
Sourav Rej, Eva Yazmin Santiago, Olga Baturina +5
Developing colloidal plasmonic nanomaterials with high carrier density that show optical resonances and photochemical activity extending from the visible to the mid-infrared (MIR)…
Near-unity efficiency in ridge waveguide-based, on-chip single-photon sources
Yujing Wang, Luca Vannucci, Sven Burger +1
We report a numerical design procedure for pursuing a near-unity coupling efficiency in quantum dot-cavity ridge waveguide single-photon sources by performing simulations with the…
Crossing of the branch cut: the topological origin of a universal 2π-phase retardation in non-Hermitian metasurfaces
Rémi Colom, Elena Mikheeva, Karim Achouri +5
Full wavefront control by photonic components requires that the spatial phase modulation on an incoming optical beam ranges from 0 to 2π. Because of their radiative coupling to the…
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…