Enhancement of nondegenerate four-wave mixing based on electromagnetically induced transparency in rubidium atoms

• DOI: 10.1364/ol.21.001064
• Publication Date: 2008-11-17T16:32:26Z
• Authors: Yong-qing Li; Min Xiao
• Keywords: Electromagnetically Induced Transparency; Rubidium; Four-wave mixing; Electromagnetically induced grating

We report an experimental observation of the enhancement nondegenerate four-wave mixing (NDFWM) based on electromagnetically induced transparency (EIT) in a lambda-type three-level system rubidium atoms. measured both linear susceptibility Im χD(1) (absorption) and third-order nonlinear coefficient χD(3) separately for NDFWM process at low atomic density. found that, owing to EIT effect, absorption term is greatly reduced, while generation resonantly enhanced, permitting us observe significant signal optically dense medium.