Multilevel avoided crossings in high Rydberg states of 85Rb

The Stark effect of ultra-cold Cs Rydberg atom is investigated in a magneto-optical trap, and the avoided crossing between nS state and (n-4) manifold is observed. The ion spectrum near the avoided crossing is obtained by using state-selective field pulse ionization technique. By changing the intensity of the applied electric field, we find that the relative intensities of two Stark states near the avoided crossing exchange obviously. Furthermore, state transfer from nS Rydberg state to high-l state due to the avoided crossing is also obtained.The Stark effect of ultra-cold Cs Rydberg atom is investigated in a magneto-optical trap, and the avoided crossing between nS state and (n-4) manifold is observed. The ion spectrum near the avoided crossing is obtained by using state-selective field pulse ionization technique. By changing the intensity of the applied electric field, we find that the relative intensities of two Stark states near the avoided crossing exchange obviously. Furthermore, state transfer from nS Rydberg state to high-l state due to the avoided crossing is also obtained.

Acta Physica SinicaJan 1, 20137 citations

Collision Effects with High-Rydberg State Atoms

Boris Peter Stoicheff

Springer series in optical sciences/SPringer series in optical sciencesJan 1, 19812 citations

Scalar polarizabilities and avoided crossings of high Rydberg states in Rb

Maurice S. O'Sullivan, Boris Peter Stoicheff

Two-photon Doppler-free spectroscopy has been used to measure Stark shifts of $n^{2}S$ Rydberg states of $^{85}\mathrm{Rb}$ (for $n=15 \mathrm{to} 80$ ). Scalar polarizabilities ${\ensuremath{\alpha}}_{0}$ were found to obey the relation ${\ensuremath{\alpha}}_{0}[\mathrm{in}\mathrm{MHz}/{(\mathrm{V}/\mathrm{cm})}^{2}]=2.202(28)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}9}{n}^{*6}+5.53(13)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}11}{n}^{*7}$, in good agreement with theoretical values. Avoided crossings were also determined, and first avoided crossings (with the $n\ensuremath{-}3$ manifold of levels) fitted the relation $E(\mathrm{in}\mathrm{V}/\mathrm{cm})=4.638(6)\ifmmode\times\else\texttimes\fi{}\frac{{10}^{8}}{{n}^{*5}}+1.528(18)\ifmmode\times\else\texttimes\fi{}\frac{{10}^{10}}{{n}^{*7}}$.Two-photon Doppler-free spectroscopy has been used to measure Stark shifts of $n^{2}S$ Rydberg states of $^{85}\mathrm{Rb}$ (for $n=15 \mathrm{to} 80$). Scalar polarizabilities ${\ensuremath{\alpha}}_{0}$ were found to obey the relation ${\ensuremath{\alpha}}_{0}[\mathrm{in}\mathrm{MHz}/{(\mathrm{V}/\mathrm{cm})}^{2}]=2.202(28)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}9}{n}^{*6}+5.53(13)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}11}{n}^{*7}$, in good agreement with theoretical values. Avoided crossings were also determined, and first avoided crossings (with the $n\ensuremath{-}3$ manifold of levels) fitted the relation $E(\mathrm{in}\mathrm{V}/\mathrm{cm})=4.638(6)\ifmmode\times\else\texttimes\fi{}\frac{{10}^{8}}{{n}^{*5}}+1.528(18)\ifmmode\times\else\texttimes\fi{}\frac{{10}^{10}}{{n}^{*7}}$.

Physical Review AApr 1, 198537 citations

Two-photon Doppler-free spectroscopy has been used to measure Stark shifts of

n^{2}S

Rydberg states of

^{85}\mathrm{Rb}

(for

n=15 \mathrm{to} 80

). Scalar polarizabilities ${\ensuremath{\alpha}}_{0}$ were found to obey the relation ${\ensuremath{\alpha}}_{0}[\mathrm{in}\mathrm{MHz}/{(\mathrm{V}/\mathrm{cm})}^{2}]=2.202(28)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}9}{n}^{*6}+5.53(13)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}11}{n}^{*7}$, in good agreement with theoretical values. Avoided crossings were also determined, and first avoided crossings (with the $n\ensuremath{-}3$ manifold of levels) fitted the relation $E(\mathrm{in}\mathrm{V}/\mathrm{cm})=4.638(6)\ifmmode\times\else\texttimes\fi{}\frac{{10}^{8}}{{n}^{*5}}+1.528(18)\ifmmode\times\else\texttimes\fi{}\frac{{10}^{10}}{{n}^{*7}}$.