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Poster Session

Poster Session III

4:00 pm – 6:00 pm, Thursday June 19 Session S00 Oregon Convention Center:, Exhibit Hall E
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Progress towards an EIT-based cold rubidium-87 clock

Poster 133
Presenter: Robert J Cooper (United States Naval Research Laboratory (NRL))
Author: Adam Black (US Naval Research Laboratory)

We plan to study the use of electromagnetically induced transparency (EIT) interrogation of a rubidium-87 optical molasses as a stable two-photon optical frequency reference. Ladder-type EIT addressing lower-lying Rydberg levels may exhibit a reduction in clock instability due to narrow natural linewidth while also realizing reduced Doppler broadening due to sub-Doppler temperatures in the optical molasses. We plan a comparison of stability and linewidth of EIT spectra for different upper levels of the ladder system: 5D5/2 and 15D/16P/16D. High-duty-cycle measurement of the EIT spectrum is made possible by rapid alternation between optical cooling and EIT pulses. We plan studies of the optimization of up-time performance and light shift effects. These results will inform on the merits of further studies of EIT spectroscopy and low-Rydberg spectroscopy for cold-atom clock applications.

Funding acknowledgement

RC acknowledges support provided by the NRC Post-doctoral Research Fellowship.

POSTERS (141)