Researchers have used an array of stacked plates to make a lens for terahertz radiation. The technique could set stage for new types of components for manipulating terahertz waves. Credit: Mittleman lab / Brown University
by Kevin Stacey
Now, researchers from Brown University's School of Engineering have developed a new type of lens for focusing terahertz radiation (which spans from about 100 to 10,000 GHz). The lens, made from an array of stacked metal plates with spaces between them, performs as well or better than existing terahertz lenses, and the architecture used to build the device could set the stage for a range of other terahertz components that don't currently exist.