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…
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…
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…