Abstract
We present a theoretical approach that terahertz surface plasmon polaritons (THz- SPPs) are tuned by temperature in a stack of dielectric and semiconductor with periodic corruga- tions. Based on Rayleigh hypothesis, we show that when THz electromagnetic wave illuminates the waved stack, temperature-dependent THz-SPPs are excited. At resonant modes, re∞ection dips or Fano-type resonance shape are found. With increasing the temperature difierence of the upper and lower semiconductor layers in the stack, transmissions increase and re∞ections decrease signiflcantly. Our investigation indicates that such stacks may achieve potential applications in thermally controlled THz devices.
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