The electromagnetic spectrum is a rainbow of light waves that surround us — but we only see a small part of it. From radio waves to gamma rays, each type of light has its own properties and uses. By ...

A research team in Korea has experimentally demonstrated, for the first time in the world, a nonlinear wave phenomenon that ...

While brightness is the main advantage of this method for producing twisted light—up to 100 times brighter than other approaches—the light includes a broad spectrum of both wavelengths and twists.