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Observation of Ultrafast Self-Action Effects in Resonant Dielectric Metasurfaces

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Abstract

We observe a blueshift of the generated third-harmonic signal on subpicosec-ond timescales enabled by multiphoton absorption in resonant silicon metasurfaces. We demonstrate a transition from a super-cubic to sub-cubic regime for the third-harmonic generation efficiency.

© 2021 The Author(s)

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