Crossover between electromagnetically induced transparency and Autler

Crossover between electromagnetically induced transparency and Autler–Townes splitting with dispersion

Lu Xiao-Gang^a), Miao Xing-Xu^a), Bai Jin-Hai^a), Yuan Yuan^a),^b), Wu Ling-An^a), Fu Pan-Ming^a), Wang Ru-Quan†^a), Zuo Zhan-Chun‡^a)

(a) Diagram of energy level. (b) Diagram of experimental setup. DL1, DL2: diode lasers; λ /2: half-wave plate; PZT: mirror on a piezoceramic; BS: 50/50 beam splitter; PD1, PD2, and PD3: photodiode.