Hydrodynamic modeling of surface plasmon enhanced photon induced current in a gold grating
Abstract
The current induced by incident photons on an gold grating slab is investigated numerically and experimentally. A semiclassical electrodynamic model is developed under the weak nonlinearity approximation. Electrons in the conduction band are treated as an electron gas in the presence of a self-consistent electromagnetic field. The model is solved by the finite element method and compared with measurements. The calculated current density as a function of incident angle and wavelength is found to be in qualitative agreement with the experimental measurements. The results show that increasing surface plasmon spatial variation enhances photon induced current.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- May 09, 2011
- Source ID
- 10.1063/1.3590200
Entities
People
- Alex English
- Cheng-wen Cheng
- Lloyd Lowe Ii
- Min-Hsiung Shih
- Wan Kuang
Organizations
- Academia Sinica
- Boise State University
- Defense Advanced Research Projects Agency
- National Science Foundation
- National Taiwan University