Particles of light – photons – are massless, so they normally pass right through each other. This generally means they can’t ...

In new research, physicists have theorized a bold way to change it up by entangling two particles of very different kinds – a ...

Lasers are known for the monochromatic nature of their light, so much so that you might never have thought there could be such a thing as a white laser. But in the weird world of physics ...

For many years, semiconductor lasers, tiny chips emitting light, have been the workhorse ... in the region of tens of watts for continuous wave (CW) operation and even higher powers for pulsed ...

A research team at Osaka University has successfully developed an ultra-compact microresonator device fundamentally different ...

By extracting these light-harvesting structures and replicating them in the lab, the team hopes to concentrate ambient sunlight enough to power a laser, Gauger said. With the new grant ...

Scientists have developed the first electrically pumped continuous-wave semiconductor laser composed exclusively of elements from the fourth group of the periodic table—the "silicon group." ...

Lasers are devices that produce intense beams of monochromatic, coherent radiation. The original term "laser" (dating to about 1960) was an acronym for "light amplification by stimulated emission of ...

The team managed to emit coherent light (a necessary condition ... Whitworth et al, Extended Short‐Wave Infrared Colloidal Quantum Dot Lasers with Nanosecond Excitation, Advanced Materials ...