Precision measurement of the hyperfine structure of theCs1336P3/2state

We report measurements of the hyperfine structure of the 6$P_{3/2}$ state of atomic ${}_{}{}^{133}{}_{}{}^{}\mathrm{Cs}$(I=7/2). A frequency-stabilized laser diode is used to perform crossed-beam laser spectroscopy of the Cs 6$S_{1/2}$(F=3,4)→6$P_{3/2}$(F’) transitions. From the measured hyperfine splittings, we determine the coefficients of the magnetic dipole (A) and electric quadrupole (B) contributions to the hyperfine structure. Our results are A=50.275(3) MHz and B=-0.53(2) MHz.