Open AccessInterferometric control of plasmonic resonator based on polarization-sensitive excitation of surface plasmon polaritons
Author(s) -
Kyookeun Lee,
Joonsoo Kim,
Hansik Yun,
GunYeal Lee,
Byoungho Lee
Publication year - 2016
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.24.021861
Subject(s) - optics , plasmon , resonator , polarizer , polarization (electrochemistry) , surface plasmon polariton , interferometry , surface plasmon , optoelectronics , polariton , physics , materials science , birefringence , chemistry
A plasmonic resonator is proposed whose electromagnetic energy density can be tuned by the polarization state of the incident light. Counter-propagating surface plasmon polaritons, which are excited by polarization-sensitive subwavelength apertures, give tunability. Stored energy density in the resonator varies from the minimum to the maximum when the orientation angle of the incoming electric field rotates by 90 degrees. After optimizing a rectangular cavity and periodic gratings, the on/off ratio is calculated as 430 and measured as 1.55. Based on our scheme, interferometric control is executed simply by rotation of a polarizer. The proposed plasmonic resonator can be utilized in all-optically controlled active plasmonic devices, coherent network elements, particle trapping systems, and polarimeters.