首页|Terahertz Transmission Properties of Split Ring Resonator Arrays
Terahertz Transmission Properties of Split Ring Resonator Arrays
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The transmission properties of double-ring split ring rcsonator(SRR) arrays and closed ring resonator arrays are measured using terahertz(THz) time-domain spectroscopy. This technique allows for the simultaneous measurement of the amplitude and phase of the transmission coefficient as a function of frequency. The ability to directly measure the phase spectrum is expected to be important in characterizing potential negative index media. In the employed experimental geometry, THz pulses are normally incident on the arrays. Thus, the magnetic field lies in the plane of the arrays and cannot contribute to the magnetic resonance of the SRR. However, it is found that the electric field, when appropriately polarized, can couple to the magnetic resonance. Shifts in the resonance properties with changes in the SRR dimensions and the substrate medium are measured, the results of which are consistent with theory.
Terahertzsplit ring resonator arraysclosed ring resonatornegative index
SHOU Xiang、GAN Benxin、SU Hongyan
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Cao Group, Salt Lake City 84118, USA
Huaian College of Information Technology, Huaian 223001, CHN
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