1. A study on electromagnetically induced transparency and velocity selective optically pumped absorption in an eight-level inverted Y-type atomic system.
- Author
-
Arindam Ghosh, Khairul Islam, Suman Mondal, Dipankar Bhattacharyya, Nikhil Pal, and Amitava Bandyopadhyay
- Subjects
- *
ATOMS , *ABSORPTION , *DENSITY matrices - Abstract
Coherent probe field (LA) propagation through an eight-level inverted Y-type atomic system, in the presence of two additional coherent radiation fields termed the field LC (control or pump field) and the field LB (repump field), is investigated by using the parameters of 87Rb transitions. The system has two ground energy levels, four intermediate energy levels, and two uppermost energy levels. A theoretical model based on the density matrix method is used for numerical simulation of the probe response under different conditions. Simulated probe absorption spectra under a Doppler-free condition as well as under thermal averaging exhibit electromagnetically induced transparency (EIT). The position and line shape of this EIT profile change with different detunings of the control and repump fields. When the three coherent fields share a common level, a funnel-like EIT window appears in the simulated probe absorption curve. Velocity selective optically pumped absorption peaks are seen in the simulated probe response at room temperature. [ABSTRACT FROM AUTHOR]
- Published
- 2018
- Full Text
- View/download PDF