Terahertz response of patterned epitaxial graphene
We study the interaction between polarized terahertz (THz) radiation and micro-structured large-area graphene in transmission geometry. In order to efficiently couple the radiation into the two-dimensional material, a lateral periodic patterning of a closed graphene sheet by intercalation doping int...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2015-01-01
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| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/17/5/053045 |
| _version_ | 1827873960086208512 |
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| author | Christian Sorger Sascha Preu Johannes Schmidt Stephan Winnerl Yuliy V Bludov Nuno M R Peres Mikhail I Vasilevskiy Heiko B Weber |
| author_facet | Christian Sorger Sascha Preu Johannes Schmidt Stephan Winnerl Yuliy V Bludov Nuno M R Peres Mikhail I Vasilevskiy Heiko B Weber |
| author_sort | Christian Sorger |
| collection | DOAJ |
| description | We study the interaction between polarized terahertz (THz) radiation and micro-structured large-area graphene in transmission geometry. In order to efficiently couple the radiation into the two-dimensional material, a lateral periodic patterning of a closed graphene sheet by intercalation doping into stripes is chosen. We observe unequal transmittance of the radiation polarized parallel and perpendicular to the stripes. The relative contrast, partly enhanced by Fabry–Perot oscillations reaches 20%. The effect even increases up to 50% when removing graphene stripes in analogy to a wire grid polarizer. The polarization dependence is analyzed in a large frequency range from <80 GHz to 3 THz, including the plasmon–polariton resonance. The results are in excellent agreement with theoretical calculations based on the electronic energy spectrum of graphene and the electrodynamics of the patterned structure. |
| first_indexed | 2024-03-12T16:44:24Z |
| format | Article |
| id | doaj.art-51537b3f4ee4463f84b7c40742ff75eb |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:44:24Z |
| publishDate | 2015-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-51537b3f4ee4463f84b7c40742ff75eb2023-08-08T14:17:17ZengIOP PublishingNew Journal of Physics1367-26302015-01-0117505304510.1088/1367-2630/17/5/053045Terahertz response of patterned epitaxial grapheneChristian Sorger0Sascha Preu1Johannes Schmidt2Stephan Winnerl3Yuliy V Bludov4Nuno M R Peres5Mikhail I Vasilevskiy6Heiko B Weber7Department of Physics, Friedrich-Alexander-University Erlangen-Nuremberg (FAU) , Staudtstraße 7, D-91058 Erlangen, GermanyDepartment of Physics, Friedrich-Alexander-University Erlangen-Nuremberg (FAU) , Staudtstraße 7, D-91058 Erlangen, Germany; Department of Electrical Engineering and Information Technology, Technical University Darmstadt , Merckstraße 25, D-64283 Darmstadt, GermanyInstitute of Ion Beam Physics and Materials Research, Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstraße 400, D-01314 Dresden, GermanyInstitute of Ion Beam Physics and Materials Research, Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstraße 400, D-01314 Dresden, GermanyDepartment of Physics and Center of Physics, University of Minho , Campus de Gualtar, P-4710-057 Braga, PortugalDepartment of Physics and Center of Physics, University of Minho , Campus de Gualtar, P-4710-057 Braga, PortugalDepartment of Physics and Center of Physics, University of Minho , Campus de Gualtar, P-4710-057 Braga, PortugalDepartment of Physics, Friedrich-Alexander-University Erlangen-Nuremberg (FAU) , Staudtstraße 7, D-91058 Erlangen, GermanyWe study the interaction between polarized terahertz (THz) radiation and micro-structured large-area graphene in transmission geometry. In order to efficiently couple the radiation into the two-dimensional material, a lateral periodic patterning of a closed graphene sheet by intercalation doping into stripes is chosen. We observe unequal transmittance of the radiation polarized parallel and perpendicular to the stripes. The relative contrast, partly enhanced by Fabry–Perot oscillations reaches 20%. The effect even increases up to 50% when removing graphene stripes in analogy to a wire grid polarizer. The polarization dependence is analyzed in a large frequency range from <80 GHz to 3 THz, including the plasmon–polariton resonance. The results are in excellent agreement with theoretical calculations based on the electronic energy spectrum of graphene and the electrodynamics of the patterned structure.https://doi.org/10.1088/1367-2630/17/5/053045plasmongrapheneTHz00.0020.0042.10 |
| spellingShingle | Christian Sorger Sascha Preu Johannes Schmidt Stephan Winnerl Yuliy V Bludov Nuno M R Peres Mikhail I Vasilevskiy Heiko B Weber Terahertz response of patterned epitaxial graphene New Journal of Physics plasmon graphene THz 00.00 20.00 42.10 |
| title | Terahertz response of patterned epitaxial graphene |
| title_full | Terahertz response of patterned epitaxial graphene |
| title_fullStr | Terahertz response of patterned epitaxial graphene |
| title_full_unstemmed | Terahertz response of patterned epitaxial graphene |
| title_short | Terahertz response of patterned epitaxial graphene |
| title_sort | terahertz response of patterned epitaxial graphene |
| topic | plasmon graphene THz 00.00 20.00 42.10 |
| url | https://doi.org/10.1088/1367-2630/17/5/053045 |
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