2 papers
physics.optics2026
Free-space multipass optical parametric amplifier
Milan Fayat, Giovanni Cichelli, Michele Natile +5
Scaling the efficiency of optical parametric amplifiers (OPAs) without degrading spatio-temporal pulse quality is fundamentally limited by spatio-temporal walk-off, intensity depen…
physics.atom-ph2026
Observation of intrastate and interstate facilitation between Rydberg S, P and D levels
Bleuenn Bégoc, Sukhjit P. Singh, Giovanni Cichelli +2
We report experimental results on Rydberg facilitation, whereby Rydberg levels can be excited off-resonantly in the presence of a nearby Rydberg atom because of Rydberg-Rydberg int…