Two-dimensional subwavelength focusing using a slotted meta-screen
| dc.creator | Markley, Loïc | |
| dc.creator | Eleftheriades, George V. | |
| dc.date | 2008-09-26 | |
| dc.date.accessioned | 2026-07-07T10:05:42Z | |
| dc.date.available | 2026-07-07T10:05:42Z | |
| dc.description | A transmission screen with subwavelength slots is described which can focus electromagnetic radiation to a two-dimensional subwavelength spot. Unlike negative-refractive-index focusing implementations, this "meta-screen" does not suffer from image degradation when losses are introduced and is easily scalable from microwave to Terahertz frequencies and beyond. The slotted geometry is designed using a theory of shifted beams to determine the necessary weighting factors for each slot element, which are then converted to appropriate slot dimensions. The screen was designed using a pair of rotated orthogonal focusing axes to produce a spot on a focal plane located 0.25 λaway. Full-wave simulations are corroborated by experimental measurements at 10 GHz reporting a full-width half-maximum beam width of 0.27 λalong the x-axis and 0.38 λalong the z-axis. | |
| dc.description | 3 pages, 4 figures | |
| dc.identifier | https://arxiv.org/abs/0809.4567 | |
| dc.identifier | http://arxiv.org/abs/0809.4567 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/170084 | |
| dc.subject | Optics | |
| dc.title | Two-dimensional subwavelength focusing using a slotted meta-screen | |
| dc.type | text |