dc.contributor.author | Penketh, H | |
dc.contributor.author | Bertolotti, J | |
dc.contributor.author | Barnes, WL | |
dc.date.accessioned | 2019-09-18T11:01:56Z | |
dc.date.issued | 2019-09-18 | |
dc.description.abstract | We investigate the optimum emitter position within reflecting parabolic antennas whose size is comparable to the emission wavelength. Using finite-element modelling we calculate the dependence of the amount of power directed into a 20° half-angle cone on the emitter’s position and compare with results obtained using geometrical optics. The spatially varying density of states within the wavelength-scale reflector is mapped and its impact discussed. In addition, it is demonstrated that changing the characteristic size of the reflector within the range from 0.5 to 1.5 times the emission wavelength has a strong bearing on the optimum emitter position, a position that does not in general coincide with the parabola’s focus. We calculate that the optimal antenna size and emitter position allow for the maximum directed power to exceed that obtained in the geometrical optics regime. | en_GB |
dc.description.sponsorship | Engineering and Physical Sciences Research Council (EPSRC) | en_GB |
dc.format | .txt | en_GB |
dc.identifier.doi | 10.24378/exe.1883 | |
dc.identifier.grantnumber | EP/L015331/1 | en_GB |
dc.identifier.uri | http://hdl.handle.net/10871/38804 | |
dc.language.iso | en | en_GB |
dc.publisher | University of Exeter | en_GB |
dc.relation.url | http://hdl.handle.net/10871/39155 | en_GB |
dc.rights | CC BY 4.0 | en_GB |
dc.title | On the optimal position of an emitter in a wavelength-scale parabolic reflector (dataset) | en_GB |
dc.type | Dataset | en_GB |
dc.date.available | 2019-09-18T11:01:56Z | |
dc.description | The dataset is divided into folders referring to each applicable figure in the corresponding publication. Within each of these folders (or subfolders within) is a .txt file beginning 'Descrip' which explains the contents of the files and how they were used to generate the figures seen in the publication. Where practical there is both the 'raw' data straight from COMSOL multiphysics simulations and the processed version which can be directly used to generate the figures in the paper. | en_GB |
dc.description | The article associated with this dataset is available on open access in ORE at http://hdl.handle.net/10871/39155, with the title 'Optimal position of an emitter in a wavelength-scale parabolic reflector' | en_GB |
dc.identifier.journal | OSA Applied Optics | en_GB |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0 | en_GB |
exeter.funder | ::Engineering and Physical Sciences Research Council (EPSRC) | en_GB |
rioxxterms.version | NA | en_GB |
rioxxterms.type | Other | en_GB |
refterms.dateFOA | 2019-09-18T11:02:03Z | |