December cover picture by Photonics Spectra: This terahertz image of a €20 banknote watermark maps the optical material parameters by terahertz transmission in the spectral range >4THz, from high (red) to low (blue) integrated signals. (THz image recorded with Menlo Systems TERA K15 THz spectrometer)

Read in the feature article on page 34 of the December issue of Photonics Spectra how the THz spectral range has the potential to transform manufacturers' techniques to measure material thickness for paints, coatings, papers, and thin films, with Menlo Systems offering ready-to-use solutions.

Link to the digital edition of the Photonics Spectra December 2023 issue