Stabilization of diode-laser frequency to atomic transitions

Different methods of stabilization of diode lasers are reviewed with the emphasis on stabilization to atomic transitions. The stabilization methods to Doppler-broadened and Doppler-free resonances are presented. A novel method of stabilization using the saturated dichroism of atomic vapours is described. An example of stability transfer from the diode laser onto the reference Fabry–Perot cavity is presented.