Copyright by Kirsten Viering 2006 - Raizen Lab - The University of ...

The degeneracy of some of these levels, i.e. F=0 M=0 and the F=2 manifold
are due to the same relative transition strengths. For trapping atoms with different
magnetic sublevels it is desirable to have only one single magic wavelength for all of
them. A universal magic wavelength like this does not exist in Sodium; nevertheless,
for linear polarized light, a trapping wavelength around 1040nm looks promising since
the potential is attractive for all states and does not change dramatically with the
hyperfine level. Plots of the AC-Stark shift are shown in figs. 3.1 and 3.2. The poles are
due to resonant transitions in Sodium atoms, e.g. at 589 nm.
Figure 3.1: Plot of the AC-Stark shift. Numerical values are for a linearly polarized
beam with P=1W, w0=10µm and π-polarized light; the hyperfine structure belongs to
the 3 2 P3/2 state.
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