Electromagnetically induced transparency and slow light in V-type three-level system of GaAs/AlGaAs multiple quantum wells Review Article

We observe electromagnetically induced transparency in the transient optical response in V-type three-level system of GaAs/AlGaAs multiple quantum wells by using the nonradiative coherence between the heavy hole and the light hole valence bands. And we analyze the V-type three level schemes with density matrix and Maxwell equation in a transient regime then obtain the phase shift, absorption, group velocity and group velocity dispersion. The calculated group velocity is ∼9.31×104 m/s and the corresponding delay time is ∼6.5 ps.