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Journal of Sichuan Normal University

Double Electromagnetically Induced Two-photon Transparency in a Five-level Atomic System

Hou Bang-pin

Published Jan 1, 2009• 0 citations
OpenAlex

Abstract

Double electromagnetically induced two-photon transparency in a five-level atomic system is studied by means of the semiclassical theory.The effects of the Rabi frequencies and the detunings for the external control-fields on the two-photon absorption spectra are also investigated.Finally,the explanations of these phenomena are given by using the dressed states.

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Journal of Yibin University•Jan 1, 2011•1 citation
Double electromagnetically induced two-photon transparency in a five-level atomic system is studied by means of the semiclassical theory.The effects of the Rabi frequencies and the detunings for the external control-fields on the two-photon absorption spectra are also investigated.Finally,the explanations of these phenomena are given by using the dressed states.
The absorption properties in an inverted-tripod scheme atomic system driven by the coherent fields are investigated by means of the semiclassical theory.The result obtained by means of numerical method indicates that by adjusting the Rabi frequencies of the coherent fields,there appear triple,double,single electromagnetically induced transparency(EIT).In the triple EIT,the location of transparent windows can be controlled by adjusting the detunings for the coherent fields,and changes continuously,i.e.there exist a series of continuous frequencies for the probe field propagating in an atomic medium without absorption in a certain range.Finally,the explanations of these phenomena are given by using the dressed states.
In the five-level K-type atomic system, by using another control field to couple the excited level of the coupling transition to the sixth higher excited level, a six-level atomic system is constructed.In this system, the multiple electromagnetically induced two-photon transparency has been investigated. What is more, if choosing the parameters of the control fields properly the triple transparency window will reduce to a double one which means that the multiple electromagnetically induced two-photon transparency can be manipulated in this system. The physical interpretation of these phenomena is given in terms of the dressed states and the dark states.
In the five-level K-type atomic system, by using another control field to couple the excited level of the coupling transition to the sixth higher excited level, a six-level atomic system is constructed. In this system, the multiple electromagnetically induced two-photon transparency has been investigated. What is more, if choosing the parameters of the control fields properly the triple transparency window will reduce to a double one which means that the multiple electromagnetically induced two-photon transparency can be manipulated in this system. The physical interpretation of these phenomena is given in terms of the dressed states and the dark states.