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 …

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 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 simple thickness measurement method based on the coherent homodyne CW THz system
was demonstrated; it does not require precise control of the frequencies of the beat source …

In many industrial fields, like automotive and painting industry, the thickness of thin layers is
a crucial parameter for quality control. Hence, the demand for thickness measurement …

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

A system of two probes is designed for terahertz (THz) time-domain spectroscopy of sub-
wavelength size objects. A twin-needle probe confines broadband THz pulses spatially by …

We present a fast and accurate time domain based algorithm which extracts simultaneously
the thickness and refractive index of highly transparent samples from terahertz time domain …

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 …