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Experimental tunable SRR setup showing the copper ring, the USI-GaAs placed over the gap and overlapping the ring, and the wire leads mounted on the opposite side, connecting to the semirigid coaxial cable.
Measured reflection magnitude for a SRR with a 1 mm gap covered by USI-GaAs compared to an HFSS simulation, both with the laser off.
Plots of showing SRR resonances for four different diode laser powers in the range of 0–189 mW.
Frequency of the minima as a function of laser power, demonstrating tuning over a 175% bandwidth. The laser wavelength was 975 nm.
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