Modulation of four-wave mixing via photonic band gap

Abstract

The dressed four-wave mixing (FWM) in a four-level 85Rb atomic system, experimentally demonstrated in this paper, is comprised by two coexisting processes. One is emission signal due to enhanced nonlinear via electromagnetically induced transparency (EIT). The other is the Bragg reflection of probe beam because of the created photonic band gap (PBG), which is affected by both linear and third-order nonlinear susceptibility. Moreover, we have demonstrated that different experimental parameters can significantly influence the measured signal with flexibly controlled PBG. These studies are found useful for understanding the fundamental mechanisms in generated FWM processing.

Graphical abstract

Keywords

four-wave mixing (FWM) / electromagnetically induced transparency (EIT) / photonic band gap (PBG)

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Higher Education Press and Springer-Verlag Berlin Heidelberg