Single-Photon Atomic Cooling - Raizen Lab - The University of ...

this figure only the relevant hyperfine manifolds are shown. The decay modes
F = 2
F = 1
-1 0 1
.02
-2 -1 0 1 2
.42
-1 0 1
Figure 2.12: Decay mode branching ratios for an atom decaying from the
|F ′ = 1,mF = 1〉 state. The allowed spontaneous electric dipole transitions
are indicated by red arrows. The value next to each arrow indicates the relative
strength of each transition.
allowed by a spontaneous electric dipole transitions from the |F ′ = 1,mF = 1〉
state are indicated by red arrows. The value next to each arrow indicates
the relative strength of the transition. When single-photon cooling is applied
to 87 Rb only those atoms which decay into the |F = 1,mF = 0〉 state are
considered when calculating quantities related to the cooling process, such as
the final phase space density.
The absolute value of any D2 transition can be found as a multiple of
〈J = 1/2||µ||J ′ = 3/2〉 which is determined from the natural lifetime of the
71
.05
.42
.10