Backward Phase-Matched Second-Harmonic Generation from Stacked Metasurfaces
- 22 January 2021
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 126 (3), 033901
- https://doi.org/10.1103/physrevlett.126.033901
Abstract
We demonstrate phase-matched second-harmonic generation (SHG) from three-dimensional metamaterials consisting of stacked metasurfaces. To achieve phase matching, we utilize a novel mechanism based on phase engineering of the metasurfaces at the interacting wavelengths, facilitating phase-matched SHG in the unconventional backward direction. Stacking up to five metasurfaces,we obtain a phase-matched SHG signal, which scales superlinearly with the number of layers. Our results motivate further investigations to achieve higher conversion efficiencies also with more complex wave fronts.Funding Information
- Academy of Finland (308596, 320165)
- H2020 European Research Council (639109, 724881)
- National Research Foundation of Korea (NRF-2019R1A2C3003129, NRF-2019M3A6B3030637, NRF-2019R1A5A8080290, NRF-2020K1A3A1A21024374, NRF-2017H1A2A1043204)
- Ministry of Science, ICT and Future Planning
- Hyundai Motor Chung Mong-Koo Foundation
- Ministry of Education, Science and Technology
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