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Nonlinear terahertz metamaterials via field-enhanced carrier dynamics in GaAs.
Physical review letters, no. 21 (2013): 217404-217404
We demonstrate nonlinear metamaterial split ring resonators (SRRs) on GaAs at terahertz frequencies. For SRRs on doped GaAs films, incident terahertz radiation with peak fields of ~20-160 kV/cm drives intervalley scattering. This reduces the carrier mobility and enhances the SRR LC response due to a conductivity decrease in the doped thin...More
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