Backward phase-matched second-harmonic generation from stacked metasurfaces
Optics
2023-03-17 v1
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. By stacking up to five metasurfaces, we obtain the expected factor of 25 enhancement in SHG efficiency. Our results motivate further investigations to achieve higher conversion efficiencies also with more complex wavefronts.
Cite
@article{arxiv.2006.06988,
title = {Backward phase-matched second-harmonic generation from stacked metasurfaces},
author = {Timo Stolt and Jeonghyun Kim and Sébastien Héron and Anna Vesala and Mikko. J. Huttunen and Robert Czaplicki and Martti Kauranen and Junsuk Rho and Patrice Genevet},
journal= {arXiv preprint arXiv:2006.06988},
year = {2023}
}
Comments
5 pages, 3 figures, supplementary material