The ac Stark shifts of the terahertz clock transitions of barium

Yu Geng-Hua†^a), Geng Ying-Ge^a), Li Long^a), Zhou Chao^a), Duan Cheng-Bo^b), Chai Rui-Peng^a), Yang Yong-Ming^a)

Dependences of energy level shifts of the 6s5d ³D₁ ( m = 0) and 6s5d ³D₂ ( m = 0, ±1) sub-levels on linearly polarized trapping laser wavelength. The arrows show the magic wavelength points with negative light shifts.