Led by Manijeh Razeghi, a team of researchers has designed a new laser technology with high power and high brightness. New advances by Prof. Manijeh Razeghi and her Center for Quantum Devices (CQD) ...

The terahertz quantum cascade laser on its mounting. Credit: University of Leeds Lasers that switch on and off billions of times per second are the backbone of optical communications networks, but ...

Terahertz quantum cascade lasers (THz QCLs) are semiconductor-based devices that produce coherent radiation within the terahertz region of the electromagnetic spectrum. These lasers operate via ...

Free-space optical communication, the communication between two devices at a distance using light to carry information, is a highly promising system for achieving high-speed communication. This system ...

The quest is on to make terahertz sources that are small, portable and capable of operating at room temperature. Such a breakthrough could lead to advances in everything from cancer screening to ...

Researchers at MIT, Ma., USA, and the University of Waterloo, On., Canada, have developed a high-power, portable version of a quantum cascade laser, which can generate terahertz radiation outside of a ...