Abstract

The simplest mechanism for cooling of the quantum systems (QS) by laser radiation is the so-called Doppler cooling initially proposed in.^1,2 Doppler cooling occurs when a QS is irradiated with counter propagating laser waves with frequencies detuned to the red from the resonance. In this scheme a moving QS absorbs resonant photons from the oppositely to the QS velocity propagating laser wave and thus encounters a force opposite to its velocity and becomes cooled. The necessary condition for laser cooling in such schema is the spontan emission of the excited QS with the same probability in all directions.

© 1994 IEEE