Figure 2
From: Atomic-state diagnostics and optimization in cold-atom experiments

Faraday rotation observed with a single beam of 2.5 μW/mm2 intensity, tuned to resonance. (a) Contour plot of the rotation angle dependence on magnetic field and time after switching on the light. (b) Expanded narrow central region of B z ≈ 0. (c) Horizontal cuts from (a) showing the rotation signals after 1, 2, 3, 4, 5 and 6 ms (top to bottom traces on the left side, respectively. (d) Time evolution of the rotation signal θ(B Z ) for magnetic-field values of: 8 mG (top black), 2 G (middle red), and 5.5 G (lowest blue).