You, JW;
Panoiu, NC;
(2019)
Plasmon-induced nonlinearity enhancement and homogenization of graphene metasurfaces.
Optics Letters
, 44
(12)
pp. 3030-3033.
10.1364/OL.44.003030.
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Abstract
We demonstrate that the effective third-order nonlinear susceptibility of a graphene sheet can be enhanced by more than two orders of magnitude by patterning it into a graphene metasurface. In addition, in order to gain deeper physical insights into this phenomenon, we introduce a versatile homogenization method, which is subsequently used to characterize quantitatively this nonlinearity enhancement effect by calculating the effective linear and nonlinear susceptibility of graphene metasurfaces. The accuracy of the proposed homogenization method is demonstrated by comparing its predictions with those obtained from the Kramers-Kronig relations. This work may open up new opportunities to explore novel physics pertaining to nonlinear optical interactions in graphene metasurfaces.
| Type: | Article |
|---|---|
| Title: | Plasmon-induced nonlinearity enhancement and homogenization of graphene metasurfaces |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1364/OL.44.003030 |
| Publisher version: | https://doi.org/10.1364/OL.44.003030 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. 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/10079599 |
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