Ren, Q;
You, JW;
Panoiu, NC;
(2019)
Large enhancement of the effective second-order nonlinearity in graphene metasurfaces.
Physical Review B
, 99
(20)
, Article 205404. 10.1103/PhysRevB.99.205404.
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Abstract
Using a powerful homogenization technique, one- and two-dimensional graphene metasurfaces are homogenized both at the fundamental frequency (FF) and second harmonic (SH). In both cases, there is excellent agreement between the predictions of the homogenization method and those based on rigorous numerical solutions of Maxwell equations. The homogenization technique is then employed to demonstrate that, owing to a double-resonant plasmon excitation mechanism that leads to strong, simultaneous field enhancement at the FF and SH, the effective second-order susceptibility of graphene metasurfaces can be enhanced by more than three orders of magnitude as compared to the intrinsic second-order susceptibility of a graphene sheet placed on the same substrate. In addition, we explore the implications of our results on the development of new active nanodevices that incorporate nanopatterned graphene structures.
| Type: | Article |
|---|---|
| Title: | Large enhancement of the effective second-order nonlinearity in graphene metasurfaces |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevB.99.205404 |
| Publisher version: | https://doi.org/10.1103/PhysRevB.99.205404 |
| Language: | English |
| Additional information: | This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10074888 |
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