We experimentally demonstrate the cesium electric quadrupole transition from the 6S_1/2 ground state to the 7D_3/2,5/2 excited state through a virtual level by using a single laser at 767 nm. The excited state energy level population is characterized by varying the laser power, the temperature of the vapor, and the polarization combinations of the laser beams. The optimized experimental parameters are obtained for a high resolution transition interval identification. The magnetic dipole coupling constant A and electric quadrupole coupling constant B for the 7D_3/2,5/2 states are precisely determined by using the hyperfine levels intervals. The results, A = 7.39 (0.06) MHz, B = −0.19 (0.18) MHz for the 7D_3/2 state, and A = −1.79 (0.05) MHz, B =1.05 (0.29) MHz for the 7D_5/2 state, are in good agreement with the previous reported results. This work is beneficial for the determination of atomic structure information and parity non-conservation, which paves the way for the field of precision measurements and atomic physics.

我们通过实验证明，通过使用767 nm的单个激光，铯电四极态从6 S _1/2基态跃迁到7 D _{3 / 2,5 / 2}激发态通过虚拟能级跃迁。激发态能级总体的特征在于改变激光功率，蒸气温度和激光束的偏振组合。获得了优化的实验参数，可用于高分辨率转换间隔识别。通过使用超精细能级间隔，可以精确确定7 D _{3 / 2,5 / 2}状态下的磁偶极耦合常数A和四极电耦合常数B。结果A= 7.39（0.06）MHz，对于7 D _3/2状态，B = −0.19（0.18）MHz，对于A = −1.79（0.05）MHz，对于7 D _5/2状态，B = 1.05（0.29）MHz ，与先前报告的结果非常吻合。这项工作有利于确定原子结构信息和奇偶性不守恒，这为精密测量和原子物理学领域铺平了道路。