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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…
Crossover from non-thermal to thermal photoluminescence from metals excited by ultrashort light pulses
Y. Sivan, I. W. Un, I. Kalyan +3
Photoluminescence from metal nanostructures following intense ultrashort illumination is a fundamental aspect of light-matter interactions. Surprisingly, many of its basic characte…