Electromagnetically induced absorption

A. Lezama, S. Barreiro, A. M. Akulshin
1999 Physical Review A. Atomic, Molecular, and Optical Physics  
A large increase in atomic absorption due to coherent interaction with resonant radiation is predicted for a closed transition between two degenerate atomic levels verifying 0ϽF g ϽF e (F g and F e are the total angular momentum of the ground and the excited levels, respectively͒. In good agreement with the theoretical prediction, a total absorption enhancement by a factor 1.7 was obtained on the D 2 line of 85 Rb in a vapor cell experiment.
doi:10.1103/physreva.59.4732 fatcat:z634zknyqvellcli7dnty7tnrq