Observations of Autler-Townes spatial splitting of four-wave mixing image
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We report the self- and external-dressed Autler-Townes (A-T) splittings of the images of the generated four-wave mixing signal (FWM) and electromagnetically induced transparency (EIT) of probe images in cascade three-level atomic system. Such spatial properties of probe and FWM signals are induced by the enhanced cross-Kerr nonlinearity. We demonstrate the controlled electromagnetically induced spatial dispersion (EISD), splitting and focusing of probe and FWM signals images by adjusting self- and external-dressing fields. Studies on such controllable A-T spatial splitting and spatial EIT effect can be very useful in applications of spatial signal processing and optical communication.
KeywordsProbe Transmission Electromagnetically Induce Transparency Spatial Shift Resonant Point Resonant Transition Frequency
This work was supported by the 973 Program (No. 2012CB921804), the Xi'an Jiaotong University Innovation Fund for Undergraduate Research Training and Practice, the National Natural Science Foundation of China (No. 10974151, No. 61078002, No. 61078020, No. 11104214, No. 61108017, No. 11104216, No. 61205112), the Specialized Research Fund for the Doctoral Program of Higher Education of China (No. 20110201110006, No. 20110201120005, No. 20100201120031), and China Postdoctoral Science Foundation (No. 2012M521773).