Li, G;
Chen, S;
Zeuner, F;
Weismann, M;
Reineke, B;
Valev, VK;
Cheah, KW;
... Zentgraf, T; + view all
(2016)
Giant Nonlinear Optical Activity from Planar Metasurfaces.
Presented at: Metamaterials 2016, Crete, Greece.
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Abstract
Second harmonic generation circular dichroism (CD) is more sensitive to the handedness of chiral materials than its linear optical counterpart. In this work, we show that 3D chiral structures are not necessary for introducing strong CD for harmonic generations. Specifically, we demonstrate giant CD for both second harmonic generation and third harmonic generation on suitably designed ultrathin plasmonic metasurfaces. It is experimentally and theoretically verified that the overwhelming contribution to this nonlinear CD is of achiral origin. The results shed new light on the origin of the nonlinear CD effect in achiral planar surfaces.
| Type: | Conference item (Presentation) |
|---|---|
| Title: | Giant Nonlinear Optical Activity from Planar Metasurfaces |
| Event: | Metamaterials 2016 |
| Location: | Crete, Greece |
| Dates: | 17-22 September 2016 |
| Open access status: | An open access version is available from UCL Discovery |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices 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/1531478 |
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