February 26, 2014

A cavity that you want

Engineers are developing an optical “nanocavity” to boost light absorption in semiconductors; it could improve solar cells, cameras and more

Associated with unhappy visits to the dentist, “cavity” means something else in the branch of physics known as optics.

Put simply, an optical cavity is an arrangement of mirrors that allows beams of light to circulate in closed paths. These cavities help us build things like lasers and optical fibers used for communications.