4 papers
Metasurface spaceplates reach a millimeter-scale squeezed length of free space
Imon Kalyan, Raghvendra P. Chaudhary, Nir Shitrit
Metasurfaces offer compact flat lenses (metalenses) for miniaturized imaging systems; however, the utmost miniaturization requires not only metalenses but also a substantial reduct…
Orbit-orbit photonics: Harnessing vortex-trajectory interplay for light manipulation
Raghvendra P. Chaudhary, Imon Kalyan, Nir Shitrit
Light can carry a spin angular momentum, an intrinsic and extrinsic orbital angular momentum, associated with a circular polarization, optical vortex beams, and varying beam trajec…
Photoluminescence from metal nanostructures -- dependence on size
Imon Kalyan, Ieng Wai Un, Gilles Rosolen +2
For decades, there have been multiple seemingly contradicting experimental reports on the dependence of the photoluminescence from metal nanostructures on their size. We reconcile…
Dammann Metasurface Route to Overcoming the Uniformity Defects in Two-Dimensional Beam Multipliers
Rinat Gutin, Raghvendra P. Chaudhary, Avraham Reiner +1
Dammann gratings - beam-shaping optical elements acting as beam multipliers with equal-power beams - are a key element in three-dimensional imaging based on structured light and be…