Abstract

Optical properties, refractive index and absorption coefficient, of silicon, sapphire, silica and pyrex glass near 1 THz frequency were determined by simple transmission measurements of THz pulses. Pulses were generated and detected in photoconductive antennas driven by 100 fs pulses coming from a mode-locked Ti:Sa laser. Refractive index of transparent materials were determined by measurement the delay of THz pulses and the absorption coefficients where derived of Fresnel losses.

© 2012 Optical Society of America