Radiation from Polarized Atoms. Quantum Beats

  • Karl Blum
Part of the Physics of Atoms and Molecules book series (PAMO)


In this chapter we will consider the decay of an ensemble of excited atoms by photon emission. We will discuss the following case. We assume that an ensemble of atoms has been excited “instantaneously” at time t = 0. As usual, “instantaneous” implies that the excitation time is short compared to the mean lifetime of the excited states and any characteristic precession frequency (see Sections 3.5 and 4.7.1).


Density Matrix Hyperfine Interaction Excited Atom Stokes Parameter Polarize Atom 


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Copyright information

© Springer Science+Business Media New York 1996

Authors and Affiliations

  • Karl Blum
    • 1
  1. 1.University of MünsterMünsterGermany

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