Scientists build the world's first anti-laser

"Physicists have built the world's first device that can cancel out a laser beam - a so-called anti-laser.

The device, created by a team from Yale University, is capable of absorbing an incoming laser beam entirely.
But this is not intended as a defence against high-power laser weapons, the researchers said.
Instead they think it could be used in next-generation supercomputers which will be built with components that use light rather than electrons."


http://www.bbc.co.uk/news/technology-12453893