Comparative Study of Light Manipulation in Three-Level Systems Via Spontaneously Generated Coherence and Relative Phase of Laser Fields *

Nguyen Huy Bang,Le Nguyen Mai Anh,Nguyen Tien Dung,Le Van Doai

Fig. 4 (Color online) Variations of $n_{g}$ versus $G_{c}$(a) and $\Delta{}$$_{c}$ (b) in $\Lambda{}$-type (solid line),Ladder-system (dot-dashed line), V-system (dashed line). The employedparameters are $\varphi{}$ = 0, p = 0.9, $\Delta{}$$_{p }$=4$\gamma{}$, G$_{p}$$_{ }$= 5$\gamma{}$, $\Delta{}$$_{c }$= 0(a) and $G_{c}$ = 10$\gamma{}$ (b).