Abstract
We have investigated light beaming through a single slit in a silver thin film with periodic gratings on the output side in the mid-infrared wavelength range. We show that light beaming in mid-infrared is mainly controlled by spoof surface plasmons. We take account of both the dispersion relation and the phase-matching condition of spoof surface plasmons to obtain good beaming efficiency. Through engineering the geometrical parameters of the grating structures, we can achieve the desired near-field and far-field distribution in mid-infrared. © 2010 Optical Society of America.
Original language | English (US) |
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Pages (from-to) | 685-689 |
Number of pages | 5 |
Journal | Journal of the Optical Society of America B: Optical Physics |
Volume | 27 |
Issue number | 4 |
DOIs | |
State | Published - Apr 1 2010 |
Externally published | Yes |
ASJC Scopus subject areas
- Statistical and Nonlinear Physics
- Atomic and Molecular Physics, and Optics