Extended Data Fig. 6: Filter function of the 1.93-THz bandpass and raw spectra from the THG experiment.
From: Extremely efficient terahertz high-harmonic generation in graphene by hot Dirac fermions
a, Amplitude transmission function of a single 1.93-THz bandpass filter. b, As-measured spectral amplitude in arbitrary units (a.u.), as determined from the bare SiO2 substrate (black) and from the graphene sample (red). The incident THz peak field of the fundamental at 0.68 THz was 61 kV cm−1.
