The perfect terahertz beam — thanks to the 3D printer

(Vienna University of Technology) Terahertz radiation can be used for a wide variety of applications and is used today for airport security checks just as much as it is for material analysis in the lab. It also requires specialised techniques to manipulate the beams and get them into the right shape. At TU Wien, shaping terahertz beams is now possible with the help of a precisely calculated plastic screen produced on the 3D printer.