Autler–Townes spectroscopy of high-lying state by phase conjugate six-wave mixing
Bai Jin-Hai, Li Jian-Jun, Wu Ling-An, Fu Pan-Ming, Wang Ru-Quan, Zuo Zhan-Chun
       

(color online) SWM intensity versus (a) and (b) in a Doppler-broadened system with and when and (solid curve), 10 (dashed curve), and 20 (dash–dotted curve), while for panel (a) and for panel (b).