Revealing Hidden Materials with Multicolor THz Imaging

In this study, researchers used THz quantum cascade lasers and interferometry to identify materials hidden inside opaque media. This multicolor THz imaging is a compact solution for advanced security, inspection, and material analysis.
June 23, 2025

Discover how researchers used quantum cascade lasers and self-mixing interferometry to detect trace materials invisible to traditional imaging. With precise, low-noise current control from Wavelength Electronics’ QCL driver, the system captured high-resolution, multicolor THz images, unlocking new capabilities in security screening, materials analysis, and non-destructive inspection. Read the full case study to see how advanced control systems translate to real-world imaging breakthroughs.