Its a laser, but not as we know it. For a start, you need a microscope to see it. Gleaming eerily green, it is a single spherical particle just a few tens of nanometres across. The tiniest laser ever made revives the idea that we can compute with light, according to this article.
Origin
Consultant Editor
Journal Title
New Scientist 23 January 2010 39-41
Sector
Special Glass
Class
S 3527