研究目的
Analyzing the dispersion properties of spoof surface plasmon polaritons with 1D rectangular groove structure and simulating the refractive index sensing of SPR in terahertz band.
研究成果
The study found that the 1D periodic rectangular groove structure has strong field constraint ability in THz regime as well as in optical band, and the variation of reflection coefficient with incident angle and frequency is very sensitive to the refractive index of the analyte. These results provide a new approach to sample detection and THz regime refractive index sensing.
1：Experimental Design and Method Selection:
The study analyzed the dispersion properties of SSPPs under 1D rectangular groove structure using analytical and numerical solutions. The FEM method was used for simulation.
2：Sample Selection and Data Sources:
The study used a model structure based on Otto configuration for simulation.
3：List of Experimental Equipment and Materials:
Metals were considered to be PEC and the dielectric constant of the prism is
4：Experimental Procedures and Operational Workflow:
The study involved scanning the change of the incident wavelength and angle to get the reflectivity as a function of it.
5：Data Analysis Methods:
The study used the finite element method (FEM) for simulation.
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