Scientists have captured the moment a laser "comes to life"—and what they found challenges long-held beliefs. Using a special ...

Scientists can now snap ultra-powerful laser pulses in one shot. RAVEN reveals distortions instantly, unlocking breakthroughs ...

Physicists at the University of Oxford have unveiled a “pioneering” method for capturing the full structure of ultra-intense ...

Crucially, the laser pulse is so short that it comprises less than one cycle of the light (about 2 fs). This ensures that the emitted electron pulse is not buffeted around by an oscillating electric ...

It's huge power lasts only for the brief duration of its laser pulse—just 25 quintillionths of a second long. The post This laser packs more punch than all Earth’s power plants appeared first ...

The electrons started gaining speed behind the laser pulse in a phenomenon known as wakefield acceleration. Because light moves slower in plasma, the electrons can catch up to the laser beam.

The beam isn’t just powerful—it’s quite large. At its biggest, the laser pulse is one foot (0.3 meters) across and several feet long, according to the Michigan release.

One of the most sacred laws of physics is that nothing can travel faster than the speed of light in vacuum. But this speed limit has been smashed in a recent experiment in which a laser pulse travels ...