An atom placed in a small high-finesse optical cavity will dominantly emit into modes sustained by the cavity. If the cavity supports many frequency-degenerate modes, the radiation pattern depends strongly on the position of the atom. These patterns can be used to detect the position of the atom with high sensitivity.
© 2003 Optical Society of America
P. Maunz, T. Puppe, T. Fischer, P. W. H. Pinkse, and G. Rempe, "Emission pattern of an atomic dipole in a high-finesse optical cavity," Opt. Lett. 28, 46-48 (2003)