Multiple plateaus of high-sideband generation from floquet matters

Abstract

We theoretically report that high -order sideband generation (HSG) from Floquet matters driven by a strong terahertz light while engineered by weak infrared light can achieve multiple plateau HSG. The Floquet-engineering systems exhibit distinctive spectroscopic characteristics that go beyond the HSG processes in field -free band -structure systems. The spatial -temporal dynamics analyses under Floquet-Bloch and time -reversal -symmetry theories clarify the spectra and its odd -even characteristics in the HSG spectrum. Our work demonstrates the HSG of Floquet matters via Floquet engineering and indicates a promising way to extract Floquet material parameters in future experiments.