Photonics Research, Volume. 11, Issue 8, 1423(2023)
Anomalous plasmon coupling and Fano resonance under structured light
Fig. 1. Interplay between optical OAM and SAM. (a) Schematic illustration of a nanoparticle polarized by an OAM beam with a helical wavefront. (b) Azimuthal phase gradient in the plane transverse to the propagation direction of a vortex beam in a spin-orbital state of
Fig. 2. LSPR of single particles on the center of vortex beams. Optical scatterings of
Fig. 3. LSPR of single particles off the beam center of a linearly polarized vortex beam (
Fig. 4. Anomalous plasmon couplings of two parallel nanorods under vortex beams. Optical spectra of two parallel nanorods located end-to-end (black line) or side-by-side (red line) and oriented (a) along the electric field direction and (b) along the light propagation direction under a linearly polarized vortex beam (
Fig. 5. Fano resonances by a pair of perpendicular nanorods under vortex beams. (a) Configurations of two perpendicular nanorods located at different positions of a vortex beam (
Fig. 6. Fano resonances by a dimer consisting of a horizontal nanorod and a vertical nanorod under a linearly polarized vortex beam (
Fig. 7.
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Da-Jie Yang, Song-Jin Im, Hai-Wen Huang, Chol-Song Ri, Kum-Dong Kim, Kil-Song Song, Ji-Cai Liu, Qu-Quan Wang, "Anomalous plasmon coupling and Fano resonance under structured light," Photonics Res. 11, 1423 (2023)
Category: Surface Optics and Plasmonics
Received: Feb. 22, 2023
Accepted: Apr. 13, 2023
Published Online: Jul. 31, 2023
The Author Email: Da-Jie Yang (djyang@ncepu.edu.cn)