Eur. Phys. J. D (2014) 68: 27
https://doi.org/10.1140/epjd/e2013-40563-9

Regular Article

Double-electromagnetically induced transparency in a Y-type atomic system

¹ Department of Physics, University of Oulu, Box 3000, 90014 Oulu, Finland
² Departamento de Física, Universidade Federal de Minas Gerais, 30123-970 Belo Horizonte, Brazil
³ Institut Néel-CNRS, BP 166, 25 rue des Martyrs, 38042 Grenoble Cedex 9, France

^a e-mail: laleh.safari@oulu.fi

Received: 10 September 2013
Received in final form: 18 November 2013
Published online: 4 February 2014

Abstract

We study the absorption and dispersion properties of a weak tunable probe field in a four-level Y-type atomic system driven by two strong laser (coupling) fields within the framework of density matrix formalism. It is found that the probe absorption profile displays double-electromagnetically induced transparency (double-EIT) and it is shown how to control it by changing the Rabi frequencies as well as the atom field detuning of the coupling fields.