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6 papers · 2 filters
Exceptional Points, Lasing, and Coherent Perfect Absorption in Floquet Scattering Systems
David Globosits, Puneet Garg, Jakob Hüpfl +4
Periodically time-varying media, known as photonic time crystals (PTCs), provide a promising platform for observing unconventional wave phenomena. We analyze the scattering of elec…
Probing Optical Magnetic Dipole Transitions in Eu using Structured Light and Nanoscale Sample Engineering
Elizaveta Gangrskaia, Thomas Schachinger, Christoph Eisenmenger-Sittner +5
At optical frequencies, interactions of the electric field component of light with matter are dominating, whereas magnetic dipole transitions are inherently weak and challenging to…
Optical force density and surface displacements in transparent dielectrics due to non-ionizing sub-picosecond laser excitation
B. Anghinoni, L. C. Malacarne, G. V. B. Lukasievicz +3
The optical force density acting in transparent dielectric media due to short laser excitation is theoretically analyzed. For typical laser pulses with picosecond duration, the mom…
Resonant states of structured photonic time crystals
Adrià Canós Valero, Sergei Gladyshev, David Globosits +3
Photonic time crystals (PTCs) are spatially uniform media with periodic modulation in time, enabling momentum bandgaps and the parametric amplification of light. While their potent…
Dynamic and Geometric Shifts in Wave Scattering
Konstantin Y. Bliokh, Zeyu Kuang, Stefan Rotter
Since Berry's pioneering 1984 work, the separation of geometric and dynamic contributions in the {\it phase} of an evolving wave has become fundamental in physics, underpinning div…
Model-free estimation of the Cramér-Rao bound for deep-learning microscopy in complex media
Ilya Starshynov, Maximilian Weimar, Lukas M. Rachbauer +4
Artificial neural networks have become important tools to harness the complexity of disordered or random photonic systems. Recent applications include the recovery of information f…