“Stanford researchers have built a titanium-sapphire lasers that are 10,000 times smaller than any previous similar device and fit them onto a chip.

Until now, such lasers have cost upwards of $100,000. But with a new approach, outlined June 26 in the journal Nature, scientists believe the cost could drop to $100 per laser.

They also claimed that thousands of lasers could be built onto one four-inch wafer in the future — and the cost per laser could become minimal. These small-scale lasers could be used in future quantum computers, in neuroscience and even in micro-level surgeries.”

From Live Science.