Scientists at DOE's Ames Laboratory have demonstrated broadband terahertz (THz) wave generation using metamaterials.
The discovery may help develop noninvasive imaging and sensing, and make possible THz-speed information communication, processing and storage.
The team created a metamaterial made up of a special type of meta-atom called split-ring resonators.
Split-ring resonators, because of their u-shaped design, display a strong magnetic response to any desired frequency waves in the THz to infrared spectrum.
They demonstrated their technique using the wavelength used by telecommunications (1.5 microns), but the THz generation can be tailored simply by tuning the size of the meta-atoms in the metamaterial.
Explore further: Argonne research expanding from injectors to inhalers