Steven Chu won the Nobel Prize in Physics for using these devices to cool Bose-Einstein Condensates.
The technique of Q-switching can be used to produce a pulsed one of these devices, first demonstrated with a ruby crystal. A necessary condition for these devices to work is that they have a majority of particles in the excited state, a phenomenon known as population inversion. Steven Chu won the Nobel Prize in Physics for using these devices to cool Bose-Einstein Condensates. The operation of one of these devices involves the falling of electrons from metastable states within a mirrored cavity, eventually resulting in the emission of light of a single wavelength. For 10 points, coherent light is emitted from what device related to the MASER?
The technique of Q-switching can be used to produce a pulsed one of these devices, first demonstrated with a ruby crystal.
{lasers}