New Results in The Investigation of Phase Dependent Electromagnetically Induced Transparency

soheyla usefzadeh, mohamad javad karimi, Hassan Pakarzadeh

In this paper, the electromagnetically induced transparency (EIT) in a square GaAs / AlGaAs quantum well is studied theoretically. The effects of the well width and the relaxation rate on the optical absorption are investigated. The results show that the obtained EIT in this system, its frequency and the transparency window depend on the well width.

Eugeny Korsunsky, Arno Huss, S. Balushev +2 more

A. Kasapi, G. Y. Yin, Manoj Kumar Jain +2 more

Arno Huss, Eugeny Korsunsky, Laurentius Windholz

It is experimentally demonstrated that the effect of electromagnetically induced transparency (EIT) can be controlled through the radiation phases. Corresponding investigations are performed by exciting a sodium atomic vapour by four-frequency laser radiation in a double-Λ configuration. In such a system the nonabsorbing (dark) state, responsible for EIT, is created only for particular values of the relative radiation phase. This phase dependency is confirmed using three different methods of phase control. Additionally, the relative phase is set at defined values in order to adjust the medium to a fixed transmission behaviour.

Xihua Yang, Zhenrong Sun, Li Hua +2 more

The transient properties of electromagnetically induced transparency (EIT) are studied with different probe pulse energies for the first time in the 3S 3P 3/2 4D ladder type three level system of sodium atom.The EIT effect would be reduced with the increase of the probe pulse energy. Theoretical calculation is carried out by solving the time dependent matrix equation. The experimental results agree well with the theoretical calculation.

Arno Huss, Norbert Peer, Eugeny Korsunsky +1 more