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physics.optics2026
Engineering Photon Avalanche Thresholds in Single Nanocrystals with Plasmonic Nanostructures
Marcin Szalkowski, Maciej Fryckowski, Małgorzata Misiak +3
Optical sub-diffraction imaging has become an essential tool in modern research. Recently, a new imaging strategy has been demonstrated that exploits the strongly nonlinear excitat…
physics.optics2026
Quench, Glow, or Stay Silent: Distance-Controlled Up-Conversion Emission near Metallic Nanowires
Maciej Cwierzona, Michal Zebrowski, Pavel Dziarhai +5
We demonstrate controlled transitions between competing radiative and nonradiative decay channels in the up-conversion luminescence of NaYF4:Er3+/Yb3+ nanocrystals placed in proxim…