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Design and measurement of a single-band metasurface sample in the terahertz band

A single-band metasurface sample in the terahertz band is designed, simulated, and measured. This terahertz metasurface sample reveals a transmission peak. And the resonance frequency of this peak is 2.06THz (amplitude is 0.74, half-bandwidth is 0.7THz). In experiments, the diameter is reduced, which leads to the amplitude is enahcned and this peak move to low frequencies. The parameter T3 is reduced, which results in the amplitude of the transmission peak strengthened, while the resonance frequency stable. When the incident angle of the electromagnetic wave is increased, this transmission peak is reduced and the resonance frequency moved to the low frequencies. The polarization angle is increased, the metasurface sample exhibits similar resonance behaviors.