Abstract
The excitation of surface plasmons on an elliptical grating followed by the transmission through a subwavelength aperture can modify the polarization state of the incoming light. The combined effect of the elliptical grooves and a slightly elliptical central hole allows to fully control the birefringence and retardation of the structure, providing a simple approach for polarization state design by the geometry of the structure. From this combination, a perfect plasmonic quarter-wave plate is obtained.
| Original language | English |
|---|---|
| Article number | 201103 |
| Journal | Applied Physics Letters |
| Volume | 101 |
| Issue number | 20 |
| DOIs | |
| State | Published - 12 Nov 2012 |
| Externally published | Yes |