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Observation of plasmonic exceptional points
J. -H. Park, A. Ndao, W. Cai +5
Non-Hermitian singularities known as exceptional-points (EPs) have been shown to exhibit increased sensitivities but the observation of EPs has so far been limited to wavelength sc…
Towards efficient random metasurfaces
Hadiseh Nasari, Matthieu Dupré, Boubacar Kanté
Random media introduce large degrees of freedom in device design and can thus address challenges in manipulating optical waves. Wave shaping with metasurfaces has mainly utilized p…
On the design of random metasurface devices
Matthieu Dupré, Liyi Hsu, Boubacar Kanté
Metasurfaces are generally designed by placing scatterers in periodic or pseudo-periodic grids. We propose and discuss design rules for functional metasurfaces with randomly placed…
Extremely Thin Dielectric Metasurface for Carpet Cloaking
LiYi Hsu, Thomas Lepetit, Boubacar Kanté
We demonstrate a novel and simple approach to cloaking a scatterer on a ground plane. We use an extremely thin dielectric metasurface (λ/12) to reshape the wavefronts distorted by…