NLIR ApS is a spin-off from the Department of Photonics Engineering at the Technical University of Denmark and is based on the novel, patented upconversion technology.


At the heart of the upconversion technology is a nonlinear crystal that converts light in the mid-infrared range into near visible light. This technology makes it possible for the first time to bring measurement systems in the mid-infrared (MIR) range from the laboratory to the process in a scalable way. The speed and sensitivity that can be achieved here is unprecedented and absolutely comparable to the state of the art in UV-VIS and NIR spectroscopy.


Especially compared to the already established near-infrared (NIR) measurement technique, MIR has significant applicative advantages and the potential to realize further, so far unsolved process applications.