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The SRR design studied. The vectors show the incident THz electromagnetic field orientation for the case of parallel orientation (to the gap). The geometrical parameters of the system are as follows: , , , , and .
Experimental transmission amplitude spectra (a) and phase tunability (b) for different levels of photoexcitation.
Simulation results of the transmission amplitude spectra (a) and phase modulation (b) for different levels of carrier density .
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