Modulation transfer spectroscopy in atomic rubidium

Details Modulation transfer spectroscopy in atomic rubidium Modulation transfer spectroscopy in atomic rubidium

2008-05-19

arxiv.org/abs/0805.2708v3

Physics

Atomic Physics

14 pages, 7 figures

Scientific paper

10.1088/0957-0233/19/10/105601

We report modulation transfer spectroscopy on the D2 transitions in 85Rb and 87Rb using a simple home-built electro-optic modulator (EOM). We show that both the gradient and amplitude of modulation transfer spectroscopy signals, for the 87Rb F=2 to F'=3 and the 85Rb F=3 to F'=4 transitions, can be significantly enhanced by expanding the beams, improving the signals for laser frequency stabilization. The signal gradient for these transitions is increased by a factor of 3 and the peak to peak amplitude was increased by a factor of 2. The modulation transfer signal for the 85Rb F=2 to F' transitions is also presented to highlight how this technique can generate a single, clear line for laser frequency stabilization even in cases where there are a number of closely spaced hyperfine transitions.

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