Measurement of the analogous Zeeman shift using a low-velocity intense source

When a laser is circularly polarized and detuned between the D1 and D2 transitions of an alkali atom, the ac Stark shift on the atom can take the form of a pure Zeeman shift. We call it the analogous Zeeman effect. We used a low-velocity intense source of rubidium atoms and the stimulated Raman spectroscopy to measure the analogous Zeeman shift. We measured the Zeeman-like ac Stark shift for various wavelengths, polarization, and intensities of the pump laser, and found the result is in agreement with the theory. (author)