Enhancement and suppression of spatial splitting four-wave mixing in atomic medium期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

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Enhancement and suppression of spatial splitting four-wave mixing in atomic medium

Authors:	Zhuang Yu-Ming Sang Su-Ling Li Pei-Ying Yuan Chen-Zhi Huo Shu-Li Xue Xin-Xin Wang Zhi-Guo Zheng Huai-Bin and Zhang Yan-Peng

Institution:	Key Laboratory for Physical Electronics and Devices of the Ministry of Education & Shaanxi Key Laboratory of Information Photonic Technique, Xián Jiaotong University, Xián 710049, China;Key Laboratory for Physical Electronics and Devices of the Ministry of Education & Shaanxi Key Laboratory of Information Photonic Technique, Xián Jiaotong University, Xián 710049, China;School of Physics and Information Technology, Ningxia Teachers Univer;Key Laboratory for Physical Electronics and Devices of the Ministry of Education & Shaanxi Key Laboratory of Information Photonic Technique, Xián Jiaotong University, Xián 710049, China;Key Laboratory for Physical Electronics and Devices of the Ministry of Education & Shaanxi Key Laboratory of Information Photonic Technique, Xián Jiaotong University, Xián 710049, China;Key Laboratory for Physical Electronics and Devices of the Ministry of Education & Shaanxi Key Laboratory of Information Photonic Technique, Xián Jiaotong University, Xián 710049, China;Key Laboratory for Physical Electronics and Devices of the Ministry of Education & Shaanxi Key Laboratory of Information Photonic Technique, Xián Jiaotong University, Xián 710049, China;Key Laboratory for Physical Electronics and Devices of the Ministry of Education & Shaanxi Key Laboratory of Information Photonic Technique, Xián Jiaotong University, Xián 710049, China;Key Laboratory for Physical Electronics and Devices of the Ministry of Education & Shaanxi Key Laboratory of Information Photonic Technique, Xián Jiaotong University, Xián 710049, China;Key Laboratory for Physical Electronics and Devices of the Ministry of Education & Shaanxi Key Laboratory of Information Photonic Technique, Xián Jiaotong University, Xián 710049, China

Abstract:	We experimentally report on the evolution from singly-dressed to doubly-dressed four-wave mixing (FWM) process by controlling the powers of the probe, the pump and the dressing fields respectively. The differences in the enhancement and the suppression of FWM signal between the two-level and cascade three-level atomic systems are observed and explained by the multi-dressed effect theoretically. Both the x direction and the y direction spatial splittings of the degenerate-FWM (DWFM) beams are obtained. We also investigate the switch between the enhancement and the suppression of the DWFM signals and between its spatial splittings in x direction and y direction. The spatial splittings in x direction and y direction can be controlled by the relative position and the intensity of the involved laser beams. Such a study can be useful for optimizing the efficiency of the FWM process and providing potential applications in spatial signal processing.

Keywords:	four-wave mixing spatial splitting enhancement suppression

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