Eur. Phys. J. D (2013) 67: 76
https://doi.org/10.1140/epjd/e2013-30619-3

Regular Article

Amplitude and phase control of transient absorption and dispersion in a microwave-driven atomic system

¹ College of Physics and Electronic Engineering, Yibin University, Yibin 644000, P.R. China
² Computational Physics Key Laboratory of Sichuan Province, Yibin University, Yibin 644000, P.R. China
³ College of Mining and Safety Engineering, Yibin University, Yibin 644000, P.R. China
⁴ College of Physics and Electronic Engineering, Sichuan Normal University, Chengdu 610066, P.R. China

^a e-mail: zhiqiangzeng@163.com

Received: 8 October 2012
Received in final form: 27 January 2013
Published online: 30 April 2013

Abstract

In a V-type three-level atomic system driven by a coherent field and a microwave field, we exploit the fact that the transient absorption and dispersion properties of the probe laser can be dramatically modified by controlling the relative phase of the applied fields. With proper values of the relative phase, the transient absorption can be eliminated, and the high refractive index without absorption can be achieved. It is shown that amplitude of the microwave field is also important factor that can result in different gain and dispersion behaviors of the probe.