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Plasmonically Enhanced Second Harmonic Generation of Weyl Semimetal TaAs through field confinement

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Abstract

We demonstrate 300 percent increase of second-harmonic generation from Weyl semimetal TaAs surface by distributing plasmonic silver nanoantennas on TaAs. Normalizing laser spot size area over silver nanoantenna areas yields actual SHG enhancement is 90-fold.

© 2022 The Author(s)

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