Abstract
Nonlinear metasurfaces based on coupling locally-enhanced plasmonic response to intersubband transitions of multi-quantum-wells have recently provided second-order susceptibilities several orders of magnitude larger than any other non-linear flat structure measured so far. Here, we demonstrate that a proper design of the plasmonic metasurface inclusions can dramatically enhance the overall non-linear response of the structure. The optimized metasurfaces are then applied to achieve efficient second-harmonic generation (SHG) and differential frequency generation (DFG) in the infrared and terahertz frequency bands, respectively. In case of low-power impinging beams (≈1W), our simulations predict large conversion efficiencies of around 0.8% and 0.01% for SHG and DFG, outperforming previously reported efficiencies in 1-2 orders magnitude and confirming the suitability of this type of plasmonic metasurfaces as a highly-efficient flat platform for non-linear photonics.
Original language | English (US) |
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Title of host publication | 2015 IEEE Antennas and Propagation Society International Symposium, APS 2015 - Proceedings |
Publisher | Institute of Electrical and Electronics Engineers Inc. |
Pages | 1084-1085 |
Number of pages | 2 |
Volume | 2015-October |
ISBN (Electronic) | 9781479978151 |
DOIs | |
State | Published - Oct 22 2015 |
Externally published | Yes |
Event | IEEE Antennas and Propagation Society International Symposium, APS 2015 - Vancouver, Canada Duration: Jul 19 2015 → Jul 24 2015 |
Other
Other | IEEE Antennas and Propagation Society International Symposium, APS 2015 |
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Country | Canada |
City | Vancouver |
Period | 7/19/15 → 7/24/15 |
ASJC Scopus subject areas
- Electrical and Electronic Engineering