The technique works because the green laser (wavelength 532 nanometers) changes the way the crystal responds to some other ...

Donated flashlights will be given to hospitalized children so that they can shine lights back at the crowds that gather ...

This could enable new tech for controlling light with light, opening doors to advanced fabrication, imaging, and illumination ...

With the help of a ruby cube and two laser beams, researchers made one ray of light cast a shadow when illuminated by the ...

Can light itself cast a shadow? It may sound like a philosophical riddle, but researchers have found that under certain ...