Optical pumping with laser-induced-fluorescence |
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Authors: | J C Camparo S B Delcamp |
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Institution: | Electronics Technology Center, The Aerospace Corporation, PO Box 92957, Los Angeles, CA 90009, USA |
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Abstract: | We describe a new procedure for optical pumping that is based on laser-induced fluorescence (LIF). The procedure is demonstrated by optically exciting a sample of Rb85 atoms, which then creates a population imbalance between the ground state hyperfine levels of Rb87 by “LIF depopulation pumping”. Though optical pumping with this technique increases the intensity dependent light-shift coefficient (i.e., ac Stark shift) of the Rb87 0-0 hyperfine transition, it reduces the frequency dependent light-shift coefficient by at least an order of magnitude. Since the stabilization of the diode laser wavelength is a significant challenge in the development of laser-pumped gas-cell atomic clocks, it is anticipated that optical pumping with LIF will be of benefit to atomic clock technology. |
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