Polarizability of the $6d_{3/2}$ state of cesium: experiment and theory

We report the first polarizability measurements of atomic cesium's $6d_{3/2}$ state. The scalar and tensor polarizabilites are determined from hyperfine-resolved Stark-shift measurements using two-photon laser-induced-fluorescence spectroscopy of an effusive beam. The resulting values are $\alpha_0 = -5270(180){a}^3_0$ and $\alpha_2 = 8650(260){a}^3_0$. We also present relativistic all-order calculation of both the scalar and tensor polarizabilitites. The resulting theoretical values, $\alpha_0 = -5686(121){a}^3_0$ and $\alpha_2 = 8750(82){a}^3_0$ have greater precision than past calculations and are in agreement with the our experimental results.