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We demonstrate THz-induced transparency in two types of single-layer CVD graphene samples utilizing high-field THz pulses. The nonlinear THz transmission depends on the local conductivity of the samples and dynamically varies in the time domain.
We demonstrate large THz transmission enhancement (>15%) in single-layer CVD graphene at high THz intensities (ETHz>10 kV/cm). The nonlinear effects exhibit non-Drude behavior in the THz conductivity, where THz fields induce extreme non-equilibrium electron distributions.
Scanning photocurrent microscopy is a unique tool that facilitates both device characterization and the study of fundamental properties of optoelectronic nanomaterials. We have built a scanning photocurrent microscope that incorporates a super continuum laser as the light source. The microscope illuminates nanoelectronic devices with a micron-scale light spot and a photon energy that is tunable from...
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