Anisotropic transmission through a plasmonic bull's eye with an elliptical central aperture in a thin Au film is analyzed experimentally by changing the polarization. The light polarized along the minor axis of the elliptical aperture had a significantly larger enhanced optical transmission than the other orthogonal polarization, which agreed well with theoretical predictions. Spectral width of the output was narrowed, which indicates temporal elongation of pulse trains.
Bibliographical noteFunding Information:
This work was supported in part by the National Research Foundation of Korea (NRF), by a grant funded by the Korea government (MSIP) (2012M3A7B4049800), by the Doosan DST (2013-8-0202), by the Samsung Electronics (2013-8-0483), by the Samsung Electro-mechanics (2013-8-1221), and by the LG Display (2013-8-0662).
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Physical and Theoretical Chemistry
- Electrical and Electronic Engineering