Using focused optical vortex beams on a twisted gold nanorod dimer, the authors measure chiral dichroism that persists where spin-based chirality vanishes, attributing it to an OAM-driven quadrupole interaction.
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physics.optics 1years
2025 1verdicts
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Unveiling orbital optical chirality through multipolar chiral light-matter interaction
Using focused optical vortex beams on a twisted gold nanorod dimer, the authors measure chiral dichroism that persists where spin-based chirality vanishes, attributing it to an OAM-driven quadrupole interaction.