a College of Physical Science and Technology, Hebei University, Baoding 071002, China b Laser Physics Center, Research School of Physical Sciences and Engineering, The Australian Nation University, Canberra, ACT 0200, Australia
Abstract:
We study electromagnetically induced absorption (EIA) and transparency (EIT) in an optical-rf two-photon coupling configuration. It is shown that the interference effect due to interacting dark resonances results in an EIA for a resonant two-photon coupling and this EIA is observed to evolve into an EIT when there is a detuning in the two-photon coupling.