Computers that write to memory faster with germanium lasers

The breakthrough about how germanium lasers can be used to send computer data to memory more quickly than conducted electricity is filled top to bottom with juicy physics. It includes computer chip wafer design and assembly, how germanium can be put into chips easily but doesn’t normally make for a good laser, what distinguishes a semiconductor that does make a good laser from one that doesn’t, and how researchers at MIT have – via doping and straining – made germanium lase after all. The end result is a path for investigating much more efficient information transfer inside your computer.