Wave mixing and high-harmonic generation enhancement by a two-color field driven dielectric metasurface [Invited]

Weifeng Yang*, Yichong Lin, Xueyi Chen, Yuxuan Xu, Hongdan Zhang, Marcelo Ciappina, Xiaohong Song*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

40 Scopus citations

Abstract

High-harmonic generation in metasurfaces, driven by strong laser fields, has been widely studied. Compared to plasma, all-dielectric nanoscale metasurfaces possess larger nonlinearity response and higher damage threshold. Additionally, it can strongly localize the driven field, greatly enhancing its peak amplitude. In this work, we adopt a Fano resonant micronano structure with transmission peaks at different wavelengths and explore its nonlinear response by both single and two-color pump fields. Compared to the high-order harmonics induced by the first resonant wavelength, the intensity of the high-harmonic radiation results is enhanced by one order of magnitude, when the metasurface is driven by various resonant and non-resonant wavelength combinations of a two-color field.
Original languageEnglish
JournalChinese Optics Letters
DOIs
StatePublished - 10 Dec 2021

Keywords

  • Fano resonance
  • High-harmonic generation
  • Metamaterial
  • Nanostructure
  • Two-color field

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