Backward phase-matched second-harmonic generation from stacked metasurfaces

Autor:	Stolt, Timo, Kim, Jeonghyun, Héron, Sébastien, Vesala, Anna, Huttunen, Mikko. J., Czaplicki, Robert, Kauranen, Martti, Rho, Junsuk, Genevet, Patrice
Rok vydání:	2020
Předmět:	Physics - Optics
Zdroj:	Phys. Rev. Lett. 126, 033901 (2021)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevLett.126.033901
Popis:	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. Comment: 5 pages, 3 figures, supplementary material
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2006.06988 Zobrazit plný text záznamu View this record from Arxiv