Dressed state analysis of electromagnetically induced transparency in a five-level X-type atomic system with wavelength mismatching effects
Amanjot Kaur, Paramjit Kaur
Abstract We present the theoretical study of the wavelength dependence of electromagnetically induced transparency (EIT) in a five-level X-type atomic system using dressed state approach. Our numerical calculations reveal that the EIT response of the composite X-type system is more intricate than its constituent Λ and two Ξ subsystems. We derive an analytical solution for probe coherence using the perturbation technique. In the case of stationary atoms, EIT control is possible by varying the strengths and/or the detunings of strong electromagnetic fields. The dressed state picture is employed to describe the position and strength of each peak in probe absorption profile. We also explore in-depth the effect of Doppler broadening on EIT for perfect ( λ p = λ c 1 ≈ λ c 2 = λ c 3 ) and various partial wavelength mismatching schemes ( λ p = λ c 1 > λ c 2 , λ c 3 and λ p = λ c 1 < λ c 2 , λ c 3 ). Our results manifest that when λ p = λ c 1
Physica Scripta•Sep 4, 2018•9 citations