We present a multilayer thickness measurement system based on optoelectronic continuous
wave THz spectroscopy. Due to its wide tuning range, high frequency resolution, and fast …

A bstract We compare a state-of-the-art terahertz (THz) time domain spectroscopy (TDS)
system and a novel optoelectronic frequency domain spectroscopy (FDS) system with …

We present a novel approach to determine the individual layer thickness in a dielectric
multilayer sample using pulsed terahertz spectroscopy in reflection geometry. In a first step …

We present a low cost terahertz (THz) spectrometer with coherent detection based on two
simple and robust dipole antennas driven by two laser diodes. The spectrometer covers …

We present a tunable multifrequency continuous wave terahertz spectrometer based on two
laser diodes, photoconductive antennas, and a coherent detection scheme. The system is …

The quality of coatings in industrial applications and scientific research with thicknesses in
the micrometer range is an important criterion for quality management. Therefore, thickness …

The accuracy of any measurement with terahertz time-domain spectroscopy (THz-TDS)
depends strongly on knowing and supplying the precise sample thickness when processing …

Featured Application Terahertz thickness gauging of polymers and paint layers; one-
hundred percent inspection of plastic pipes; process control. Abstract We apply a fast …

We report on the layer thickness determination on dielectrically coated metal cylinders using
terahertz (THz) time-domain spectroscopy. A considerable sensitivity increase of up to a …

The potential of terahertz (THz) time domain spectroscopy to simultaneously determine the
complex dielectric parameters of materials and their geometrical thickness is of high interest …