Precision measurement of the Stark shift of the6S−7Stransition in atomic cesium

We have measured the Stark shift of the $6S-7S$ transition in a beam of atomic cesium with the use of laser spectroscopy. We find this shift to be 0.7103(24) Hz ${\mathrm{}(\mathrm{V}/\mathrm{c}\mathrm{m})\mathrm{}}^{-2\mathrm{}}$. From this value we determine the static polarizability of the $7S$ state, ${\alpha }_{7S}=\left[6111\mathrm{}\mathrm{}\right(21\left)\right]a_0^3$, and the $7P-7S$ oscillator strength, $f_{7P,7S}=1.540\mathrm{}\left(7\right)\mathrm{}$. Finally, we derive a new empirical value for the $6S-7S$ Starkinduced electric dipole transition probability.