Inline thickness gauging is currently among the most promising industrial applications for terahertz optical technologies. Acting on this demand, TOPTICA Photonics (Gräfelfing, Germany) has developed a terahertz time-domain system based on electronically controlled optical sampling (ECOPS), which is designed to measure terahertz pulses at kilohertz rates to permit inline measurements even in harsh industrial environments.

Nondestructive thickness measurements using terahertz time-domain spectroscopy (TDS) systems play an increasingly important role in industrial quality control, cost management, and process monitoring. Promising applications include, for example, inline control of polymer parts during extrusion and analysis of paint and coating layers in multilayer stacks.

Read the full article at Laser Focus World.