Broadband THz imaging of composite materials

Abstract

Imaging composite materials is a challenging task due to the continual improvement in material quality and inspection demands. This paper describes a novel broadband THz noise mapping technique that performs active imaging of composite materials. The transmission measurement consists of an amplified photonic noise source to illuminate the sample and a W-band Schottky diode based radiometer to obtain the intensity profile as a function of scan position. The experimental set-up and preliminary results are presented.