In this paper, we investigated electromagnetically induced grating in a three-level atomic
system via relative phase between applied lights. The three-level atomic system interacts …

A novel four level atomic configuration is proposed for controlling the optical bistability and
transmission coefficient with application on all-optical switching. Two circularly polarized …

We propose to use a five-level cascade system to enhance self-Kerr nonlinearity under an
electromagnetically induced transparency (EIT) condition. Using density-matrix theory, an …

In this work, we present an analytical method to achieve giant Kerr nonlinearity without
absorption in a five-level atomic medium. By using iterative perturbation technique on …

The giant Kerr nonlinearity with reduced linear and nonlinear absorption in a four-level
quantum dot by employing the tunnel coupling is investigated. It is shown that by …

Using density-matrix theory, an analytical expression of the self-Kerr nonlinear coefficient of
a three-level lambda EIT medium for a weak probe light is derived. Influences of the …

A scheme for enhancement of Kerr nonlinearity with vanishing linear and nonlinear
absorption in a three-level ladder-configuration n-doped semiconductor quantum well is …

Linear and nonlinear response of a four-level N-type atomic system for a weak probe field is
investigated. It is demonstrated that the giant Kerr nonlinearity with reduced absorption can …

The relative phase of the applied lights has been used to explore the position dependence
of the transmitted and reflected light from a defective dielectric medium. The duplicated two …

Using perturbation theory we obtain expressions for the third-order nonlinear susceptibility
and the Kerr nonlinear coefficient of a four-level lambda-type atomic system in the presence …