Electromagnetically induced transparency in an open Λ-type molecular lithium system

We present an experimental study of electromagnetically induced transparency (EIT) in a Λ-type molecular lithium system. Copropagating beam geometry is utilized in order to minimize the residual Doppler width. A coupling laser power dependent study of the EIT feature is carried out. Our findings have been complemented by theoretical studies of open systems that trace the presence of EIT starting from the density-matrix equations. Numerical simulations have been performed and are in good agreement with the experimental results.