Modelling of Quasi-Optical Systems: Application to Skin Spectroscopy

This work presents a simulation pipeline for modelling quasi-optical systems and demonstrates its potential as a transfer function for permittivity extraction at terahertz (THz) and sub-terahertz (sub-THz) frequencies. The simulated transfer function is validated against oblique reflection measurements and compared to the conventional plane wave approximation. Numerical results also show the application of this simulation tool to the modelling of a skin continuous-wave (CW) spectrometer.