Simulation of double electromagnetically induced transparency in a four-level V-type system: A comparative study of probe and pump transmissions

Study of multi-window electromagnetically induced transparency (EIT) and related dispersive signals in V-type systems in the Zeeman sublevels of hyperfine states of87Rb-D2line

“…Hence, we can only obtain the conversion of EIT to EIA for the EIT peak-I at δ = 0 MHz under a strong probe regime. Here, it is to be mentioned that in our earlier work [39], we have considered a similar type of four-level V-type EIT system and presented the conversion of EIT to EIA under strong probe field (figure 9(B)). Now, keeping all the parameters and other conditions same as figure 9, we study the effect of a strong probe field on the Doppler-broadened probe dispersion coefficients (β) for the (A) three-, (B) four-and (C) five-level V-type systems (figure 10).…”

“…Similarly, in references [27][28][29][30][31][32][33][34], the researchers have chosen three-or multi-level V-type systems in the hyperfine levels to observe the EIT and/or EIA resonances in an atomic medium under various conditions. But recently, we have found that the EIT and/or EIA resonances are also being extensively studied in multi-level V-type systems formed by the Zeeman sublevels of the hyperfine levels [25,[35][36][37][38][39][40]. Now, in general, to study the EIT and dispersion signals using hyperfine levels, the pump and probe laser fields are coupled to the dipole allowed hyperfine transitions as per the atom-laser coupling schemes in absence of an external magnetic field.…”

“…On the other hand, in the presence of an external magnetic field, the hyperfine levels split into Zeeman sublevels and always multiple numbers of EIT systems will be formed by the polarized laser fields. As a result, one can obtain multi-window EIT and the related dispersive signals in the probe field [25,[35][36][37][38][39][40]. Therefore, the consideration of Zeeman sublevels is particularly important from the experimental point of view where multi-window EIT and the related dispersive signals are required for the simultaneous manipulation of group velocities and propagation of light pulses [48][49][50].…”