News tagged with radiation beam

Quantum optics with microwaves

(Phys.org) —Physicists at ETH Zurich have demonstrated one of the quintessential effects of quantum optics—known as the Hong-Ou-Mandel effect—with microwaves, whose frequency is 100'000 times lower ...

May 08, 2013
4.9 / 5 (9) 0 | with audio podcast

Ultra-fast photodetector and terahertz generator

Photodetectors made from graphene can process and conduct light signals as well as electric signals extremely fast. Within picoseconds the optical stimulation of graphene generates a photocurrent. Until now, ...

Jan 31, 2012
4.9 / 5 (10) 0 | with audio podcast

Blackening copper opens new applications

(Phys.org)—Copper is one of the world's most widely used metals. Now researchers at the University of Dundee have found that blackening copper using industry-standard lasers could make it even more adaptable and efficient.

Jan 16, 2013
4.5 / 5 (4) 2 | with audio podcast

Researchers develop light transistor

TU Vienna has managed to turn the oscillation direction of beams of light – simply by applying an electrical current to a special material. This way, a transistor can be built that functions with light ...

Jul 08, 2013
4.9 / 5 (9) 1 | with audio podcast