Abstract
The electromagnetic response of a zero-order metal grating having a primary deep short-period component and a shallow long-period component is modeled. It is found that such a metal grating has an unusual surface-plasmon-polariton band structure and exhibits strong selective absorption of incident radiation. This opens up potential for designing metal surfaces with specific optical response features.
- Received 21 September 1999
DOI:https://doi.org/10.1103/PhysRevB.61.13177
©2000 American Physical Society