Backward Phase-Matched Second-Harmonic Generation from Stacked Metasurfaces

Timo Stolt, Jeonghyun Kim, Sébastien Héron, Anna Vesala, Younghwan Yang, Jungho Mun, Minkyung Kim, Mikko J. Huttunen, Robert Czaplicki, Martti Kauranen, Junsuk Rho, Patrice Genevet

Research output: Contribution to journalArticleScientificpeer-review

2 Citations (Scopus)
9 Downloads (Pure)


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.

Original languageEnglish
Article number033901
Number of pages6
JournalPhysical Review Letters
Issue number3
Publication statusPublished - 22 Jan 2021
Publication typeA1 Journal article-refereed

Publication forum classification

  • Publication forum level 3

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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