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physics.optics2026
Optimal Diffractive Focusing of Vortex Beams
Roohollah Ghobadi, Carrie Rodriguez, Lukas Scarfe +2
We formulate diffractive ring focusing of paraxial beams carrying orbital angular momentum (OAM) through a finite circular aperture as a variational optimization problem. For a fix…
physics.optics2026
Full-Field Mode Sorter for Optical Knots
Tareq Jaouni, Roohollah Ghobadi, Ebrahim Karimi
Optical knots are topologically structured light fields whose phase or polarization singularities trace linked or knotted trajectories during propagation, making them promising can…