dc.contributor.author | Tremain, B. | |
dc.contributor.author | Rance, Helen J. | |
dc.contributor.author | Hibbins, Alastair P. | |
dc.contributor.author | Sambles, J. Roy | |
dc.date.accessioned | 2015-06-30T14:28:43Z | |
dc.date.issued | 2015-03-23 | |
dc.description.abstract | Linearly polarized microwave radiation is shown to have its plane of polarization converted to the orthogonal state upon reflection from an ultrathin (λ/25) cavity array. The structure benefits from an uncomplicated design consisting of a metallic grating closely separated from a ground plane by a dielectric spacer. A single set of periodically spaced slits (monograting) exhibits polarization conversion when the normally incident electric field is aligned at 45° to the slits. Two orthogonal sets of slits (bigrating) allows this narrow-band effect to be broadened when the two orthogonal resonances are separated in frequency. We optimise the design and experimentally demonstrate near loss-less polarization conversion (95% of the incident intensity) across a 3.1 GHz frequency band. Finally, we study the dependence of the structure's performance on incident angle and slit width. | en_GB |
dc.description.sponsorship | DSTL | en_GB |
dc.description.sponsorship | Engineering and Physical Sciences Research Council (EPSRC) | en_GB |
dc.identifier.citation | Vol. 5, article 9366 | en_GB |
dc.identifier.doi | 10.1038/srep09366 | |
dc.identifier.uri | http://hdl.handle.net/10871/17718 | |
dc.language.iso | en | en_GB |
dc.publisher | Nature Publishing Group: | en_GB |
dc.relation.url | http://www.ncbi.nlm.nih.gov/pubmed/25797210 | en_GB |
dc.rights | This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder in order to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ | en_GB |
dc.subject | Metamaterials | en_GB |
dc.subject | Microwave photonics | en_GB |
dc.subject | Photonic devices | en_GB |
dc.title | Polarization conversion from a thin cavity array in the microwave regime | en_GB |
dc.type | Article | en_GB |
dc.date.available | 2015-06-30T14:28:43Z | |
dc.identifier.issn | 2045-2322 | |
exeter.place-of-publication | England | |
dc.description | Open Access journal | en_GB |
dc.identifier.journal | Scientific Reports | en_GB |