Terahertz Near-Field Measurements of Subwavelength, Dielectric-Filled Waveguides

摘要

Using terahertz near field time-domain spectroscopy (THz-TDS), we image subwavelength, cylindrical waveguides (d=150μm) loaded with a dielectric material that has a resonance. Time- and frequency-domain near-field images of the individual electric field components are measured as the THz light emerges from the waveguides.