Before revision: Microdisks, microtoroids, and microspheres Silica optical microdisk (courtesy URL An optical microdisk, optical microtoroid, or optical microsphere uses internal reflection in a circular geometry to hold onto the photons.
After revision: Microdisks, microtoroids, and microspheres Silica optical microdisk (courtesy URL An optical microdisk, optical microtoroid, or optical microsphere uses internal reflection in a circular geometry to hold on to the photons.