Fully Automated Terahertz Layer Thickness Measurement System

Paper (INDL 5)

Mon, 09 Nov 2020 06:00pm to 06:15pm

Room: Olmstead

Attend in Zoom

We present a fully automated terahertz sensor system for layer thickness measurements of paint and coatings. The core of the instrument is a fiber coupled THz TDS platform that achieves a spectral bandwidth > 6 THz and a peak dynamic range of more than 100 dB in less than 20 s, which sets a new record for the signal quality of THz TDS systems. The system enables the characterization of up to five-layer coatings with individual thicknesses between 3 m and several hundred microns. The accuracy of the thickness determination is better than 500 nm.

Presenters and Authors Info

Presenter: Anonymous

Authors: Globisch, Björn; Liebermeister, Lars; Kohlhaas, Robert B.; Deninger, Anselm; Anklamm, Lars; Mästle, Rüdiger

Fraunhofer Institute for Telecommunications, Heinrich Hertz Institute, HHI, Helmut Fischer GmbH, TOPTICA Photonics AG