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Updated: Mar 13, 2026

Trapping of Micro Particles in Nanoplasmonic Optical Lattice
Published on: September 5, 2017
Quadrupole lattice resonances in plasmonic crystal excited by cylindrical vector beams
Kyosuke Sakai1, Kensuke Nomura1, Takeaki Yamamoto1
1Research Institute for Electronic Science, Hokkaido University, Sapporo, Hokkaido, 001-0020, Japan.
Abstract:
We report a scheme to exploit low radiative loss plasmonic resonance by combining a dark (subradiant) mode and a lattice resonance. We theoretically demonstrate that such dark-mode lattice resonances in periodic arrays of nanodisks or plasmonic crystals can be excited by vertically incident light beams. We investigate the excitation of lattice resonances in a finite sized, square-lattice plasmonic crystal by two types of cylindrical vector beams and a linearly polarized Gaussian beam. Quadrupole lattice resonances are excited by all three beams, and the largest peak intensity is obtained by using a specific type of cylindrical vector beam. Because of their lower radiative losses with many hotspots, the quadrupole lattice resonances in plasmonic crystal may pave the way for photonic research and applications that require strong light-matter interactions.
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