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Backward phase-matched second-harmonic generation from stacked metasurfaces

Abstract

We demonstrate phase-matched second-harmonic generation (SHG) from three-dimensional meta-materials consisting of stacked metasurfaces. To achieve phase matching, we utilize a novel mech-anism based on phase engineering of the metasurfaces at the interacting wavelengths, facilitatingphase-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 furtherinvestigations to achieve higher conversion efficiencies also with more complex wavefront

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Dates and versions

hal-03167871 , version 1 (12-03-2021)

Identifiers

  • HAL Id : hal-03167871 , version 1

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Timo Stolt, Jeonghyun Kim, Sébastien Héron, Anna Vesala, Mikko J Huttunen, et al.. Backward phase-matched second-harmonic generation from stacked metasurfaces. 2021. ⟨hal-03167871⟩
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