Correlation between the magic wavelengths and the polarization direction of the linearly polarized laser in the Ca+ optical clock*
Liu Pei-Lianga),b),c), Huang Yaoa),b), Bian Wua),b),c), Shao Hua),b),c), Qian Yuana),b),c), Guan Huaa),b), Tang Li-Yana),b), Gao Ke-Lina),b)†
       
Partial energy level diagram of 40Ca+.