3 papers
cs.CV2026
Filterless Snapshot Hyperspectral Imaging using Guided Patch Diffusion
Dean Hazineh, Luca Sacchi, Davide Cassara +2
We consider the problem of reconstructing a HxWx31 hyperspectral image from a grayscale snapshot measurement that is captured using only a single diffractive lens and a…
physics.optics2025
Silica meta-optics: When high-performance does not need a high-index
Luca Sacchi, Alfonso Palmieri, Vitthal Mishra +3
Metasurfaces -- planar arrays of subwavelength nanostructures -- are typically realized with high-index dielectrics, while low-index platforms are often dismissed for their weaker…
physics.optics2025
Observation of spatially structured Montgomery effect in free space
Murat Yessenov, Luca Sacchi, Alfonso Palmieri +3
We report the first direct observation of the spatially structured Montgomery effect, a lensless self-imaging phenomenon that generalizes the Talbot effect to aperiodic structures,…