Compact dual-band terahertz quarter-wave plate metasurface
Research output: Contribution to journal › Article › peer-review
Authors
Colleges, School and Institutes
External organisations
- Universidad Pública de Navarra
- Universidad Politecnica de Valencia
Abstract
A dual-band quarter-wave plate based on a modified extraordinary transmission hole array is numerically analyzed and experimentally demonstrated at terahertz frequencies. To control independently orthogonal polarizations, the original square holes are connected with vertical slits and their lateral straight sides are replaced by meander lines. This smart design enables dual-band operation with unprecedented fractional bandwidths in a compact structure. Considering a flattening deviation lower than 40% of the optimum value, a fractional bandwidth of 53.8% and 3.8% is theoretically obtained (16.8% and 2.9% in the experiment) at 1 and 2.2 THz, respectively. At these two frequencies, the structure is 0.13- λ) and 0.29- λ) thick, respectively. Given the compactness of the whole structure and the performance obtained, this quarter-wave plate is presented as a competitive device for the terahertz band.
Details
| Original language | English |
|---|---|
| Article number | 6834827 |
| Pages (from-to) | 1679-1682 |
| Number of pages | 4 |
| Journal | IEEE Photonics Technology Letters |
| Volume | 26 |
| Issue number | 16 |
| Publication status | Published - 15 Aug 2014 |
Keywords
- birefringence, extraordinary transmission, metasurface, Quarter-wave plate, terahertz applications