Figure 3

Comparison of the experimental data, HW model predictions and RCWA computation data for the THz transmission spectra of W2.5.
(a) The transmission spectra of W2.5 at different temperatures obtained from measurement (solid lines) and calculation using RCWA (dots). (b) The transmission spectra of W2.5 at 8.2 K obtained from the measurement and calculation using RCWA, HW model and No-HW model. (c) The calculated absolute value of scattering coefficients of α and β at the NbN/air and NbN/MgO interfaces as a function of frequency at 8.2 K. (d) The simulated normalized electric field (E/E0) distribution at the interface of NbN/MgO at 8.2 K, where E is the calculated electric field excited around the hole and E0 denotes the average electric field of incident plane wave.