Broadband THz wave generation with metamaterials demonstrated

Feb 04, 2014 by Breehan Gerleman Lucchesi
Broadband THz wave generation with metamaterials demonstrated
A team led by Ames Laboratory physicists demonstrated broadband, gapless terahertz emission (red line) from split-ring resonator metamaterials (background) in the telecomm wavelength. The THz emission spectra exhibit significant enhancement at magnetic-dipole resonance of the metamaterials emitter (shown in inset image). This approach has potential to generate gapless spectrum covering the entire THz band, which is key to developing practical THz technologies and to exploring fundamental understanding of optics.

Scientists at DOE's Ames Laboratory have demonstrated broadband terahertz (THz) wave generation using metamaterials.

The discovery may help develop 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 .

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: Highly efficient broadband terahertz radiation from metamaterials

add to favorites email to friend print save as pdf

Related Stories

Metamaterial flexible sheets could transform optics

Jun 06, 2013

(Phys.org) —New ultrathin, planar, lightweight, and broadband polarimetric photonic devices and optics could result from recent research by a team of Los Alamos National Laboratory scientists. The advances ...

Recommended for you

A new generation of storage—ring

36 minutes ago

A bright synchrotron source that emits over a wide part of the electromagnetic spectrum from the infrared to hard X-rays is currently being built in Lund, Sweden. The MAX IV facility presents a range of technical ...

Universe may face a darker future

4 hours ago

New research offers a novel insight into the nature of dark matter and dark energy and what the future of our Universe might be.

High-intensity sound waves may aid regenerative medicine

23 hours ago

Researchers at the University of Washington have developed a way to use sound to create cellular scaffolding for tissue engineering, a unique approach that could help overcome one of regenerative medicine's ...

Formula could shed light on global climate change

Oct 30, 2014

Wright State University researchers have discovered a formula that accurately predicts the rate at which soil develops from the surface to the underlying rock, a breakthrough that could answer questions about ...

User comments : 0

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.