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.