科研之友
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摘要
We use the optical Bloch equations to calculate spontaneous emission and Zeeman coherences of the probe laser beam in coaxial pump-probe configuration in rubidium (Rb) vapor. To properly model the open F(g) = 2 -> F(e) = 1 transition, the solution of the time-dependent optical Bloch equations was necessary. Also, due to the nature of a room temperature Rb vapor, we performed averaging of the total population of the excited F(e) = 1 state over different atomic velocities according to the Maxwell-Boltzmann distribution and over different directions of propagation of atoms through pump and probe laser beams. Time-dependent diagonal and nondiagonal density matrix elements for atoms are presented and discussed.
- 出版日期2009-7
