Non-linear spectral splitting of Rydberg sodium in external fields*
Gao Weia), Yang Hai-Fenga), Cheng Honga), Zhang Shan-Shana), Liu Dan-Fengb), Liu Hong-Pinga)†
Fig. 2. The experimental observations of the #cod#x003C0; transitions of sodium and their corresponding theoretical calculations in the electric field stronger than that shown in Figs.#cod#x000A0; 1c and 1d . a F #cod#x0003D; 50 Vcm, b F #cod#x0003D; 100 Vcm, c F #cod#x0003D; 150 Vcm, d F #cod#x0003D; 200 Vcm.