Narrow resonances in Rydberg hydrogen spectroscopy
Ryan Bullis, W. L. Tavis, M. R. Weiss +1 more
We present the recovery of six $2{S}_{1/2}\text{\ensuremath{-}}n{S}_{1/2}$ two-photon resonances in atomic hydrogen with $8\ensuremath{\le}n\ensuremath{\le}16$. For each transition, we obtain quality factors $\ensuremath{\ge}4\ifmmode\times\else\texttimes\fi{}{10}^{9}$, which we believe are the highest obtained in hydrogen laser spectroscopy excepting the singular $1{S}_{1/2}\text{\ensuremath{-}}2{S}_{1/2}$ two-photon transition. To the best of our knowledge, the transitions with $n\ensuremath{\ge}13$ have not been previously observed. These results are enabled by a tightly constrained atomic beam geometry, and by mitigation of the light shift caused by the spectroscopy laser field.
Physical Review A•Nov 18, 2024•2 citations