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physics.optics2026

Ultrafast tuning of the focusing efficiency of a nonlinear atomically thin lens

Rahil Rezwan, Bernardo Dias, Tom Hoekstra +10

Control over light focusing is paramount for optical and imaging systems. However, its implementation in active and integrated nanophotonic devices is hindered by the bulky and sta…

physics.optics2026

Gallium phosphide on insulator for nanophotonics and quantum technologies

Tobias Bucher, Otto Arnold, Muyi Yang +7

Gallium phosphide is a promising material platform for visible and near-infrared photonics and quantum technologies owing to its high refractive index, low optical absorption, and…

physics.optics2026

Strong enhancement of Er3+ emission at room temperature in Si3N4 metasurfaces

Fengkai Wei, Xinru Ji, Tobias J. Kippenberg +2

We report a significant enhancement of room-temperature photoluminescence from trivalent erbium-doped (Er3+) silicon nitride (Si3N4) metasurfaces at the telecommunication wavelengt…

physics.optics2026

Enhancement of Circular Dichroism in Chiral Dielectric Metasurfaces by Ion Beam Irradiation

Anna Fitriana, Katsuya Tanaka, Lukas Raam Jaeger +4

Resonant chiral dielectric metasurfaces can support circular dichroism exceeding that of natural materials, but their small dissipative losses simultaneously limit the maximization…

physics.optics2024

Hyper-doping of Silicon for Plasmonics in the Telecommunication Range

Jura Rensberg, Angela Barreda, Kevin Wolf +6

We investigate hyper-doping, a promising approach to introduce a high concentration of impurities into silicon beyond its solid solubility limit, for its potential applications in…