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Chinese Physics Letters

Polarized Spatial Splitting of Four-Wave Mixing Signal in Multi-Level Atomic Systems

Yu-Xin Fu, Jinyan Zhao, Yue Li Song, Guo-Xian Dai, Shu-Li Huo, Yanpeng Zhang

Published Apr 1, 2011• 0 citations
Publisher

Abstract

We illustrate our experimental observation of the periodic changes of spatial splitting of the generated four-wave mixing (FWM) signal induced by different polarization states of one of the dressing beams. It is pointed out that the changes of intensity of the dressing beam and the FWM signal have influences on the spatial splitting and their influences compete with each other. The differences between p- and s-polarized FWM beams are demonstrated. The influences of the dressing beams, which lead to the larger spatial splitting with different polarization states or frequency detuning, are observed as well.

DOI
10.1088/0256-307x/28/4/044208

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We illustrate the experimental observations of Autler-Townes splitting and the spatial splitting in an electromagnetically induced transparency window in a atomic vapor system of D1 line. As the power of the dressing laser beam changes, we study first-order and secondary Autler-Townes splitting. The influences of these dressing beams, which lead to the larger spatial splitting of four-wave mixing and the shift of probe transmission signal with by changing frequency detuning. Studies on such controllable Autler-Townes splitting and spatial splitting effect can be very useful in applications of spatial signal processing and optical communication.
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