A two-dimensional crystal with spatially varying orientation generates and all-optically switches second-harmonic vortex beams with opposite orbital angular momentum.
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physics.optics 1years
2026 1verdicts
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All-optical switching of nonlinear structured light in crystal-engineered van der Waals materials
A two-dimensional crystal with spatially varying orientation generates and all-optically switches second-harmonic vortex beams with opposite orbital angular momentum.