Artificial Generation of High Harmonics via Nonrelativistic Thomson Scattering in Metamaterial

Transmitted high-harmonic spectra. (a) Transmitted high-harmonic spectra of the metamaterial in y and x polarizations; (b) the transmitted high-harmonic spectra of the SRR and cut-wire resonators in y polarization; the inset is those in x polarization. The amplitudes are normalized to the transmitted second harmonic in y polarization generated by the metamaterial.