Laser-induced Energy Levels Shift and Broadening for Cl Atom

According to the semiclassical dispersion theory of ac Stark effect, we calculate laser-induced energy level shift and broadening for Cl atom. Under nonresonant cases at lasers frequencyν=41018 cm-1, laser-induced shift of Cl atom in states 3p52P03/2and state 3p52P01/2are 67.6 and 26.9 MHz/Wμm-2respectively. Under resonant cases laser-induced ESR shift of Cl atom in ground state 3p52P03/2can be of the order of 1 MHz/Wμm-2, and the broadening of |MJ,MI〉=12,32〉level in ground state is less than 0.1 MHz/Wμm-2. The shift and the broardening of right and left circularly polarized laser are different.