Probing the structure of multi-center molecules with odd–even high harmonics
Su Ning1, Yu Shujuan1, 2, †, Li Weiyan3, ‡, Yang Shiping2, Chen Yanjun1, §
       

(color online) Same as Fig. 1 but for . , , , and denote the positions of these four nuclei of to the origin, respectively. , , , and denote the positions of the electron to these four nuclei and denotes that to the origin. X1, X2, and X3 are the internuclear distances between two adjacent nuclei.