Ramsey spectroscopy by direct use of resonant light on isotope atoms for single-photon detuning
Abstract
We demonstrate Ramsey spectroscopy with cold 87Rb atoms via a two-photon Raman process. One laser beam has a cross-over resonant frequency on the 85Rb transition and the other beam has a 6.8 GHz shifted frequency. These two laser beams fulfill the two-photon Raman resonance condition, which involves a single-photon detuning of -2.6 GHz. By implementing these two lasers on cold 87Rb atoms, we demonstrate Ramsey spectroscopy with an interrogation time of the intermediate state by using π/2 Raman pulses. In our laser system, we can change the single-photon detuning to 1.2, 4.2 or -5.6 GHz by changing the 85Rb transition line used as a locking signal and an injected sideband. The laser system that directly uses resonant light on isotope atoms will be described in this paper.
- Publication:
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Journal of Korean Physical Society
- Pub Date:
- March 2014
- DOI:
- 10.3938/jkps.64.667
- Bibcode:
- 2014JKPS...64..667Y
- Keywords:
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- Ramsey spectroscopy;
- Atom interferometer;
- Isotope transition;
- Raman Laser