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

作　　者：Zhuang Yu-Ming Sang Su-Ling Li Pei-Ying Yuan Chen-Zhi Huo Shu-Li Xue Xin-Xin Wang Zhi-Guo Zheng Huai-Bin Zhang Yan-Peng 庄雨茗;桑苏玲;李培英;袁晨智;霍淑利;薛鑫鑫;王志国;郑淮斌;张彦鹏(Key Laboratory for Physical Electronics and Devices of the Ministry of Education&Shaanxi Key Laboratory of Information Photonic Technique,Xi'an Jiaotong University,Xi'an 710049,China;School of Physics and Information Technology,Ningxia Teachers University,Guyuan 756000,China)

机构地区：[1]Key Laboratory for Physical Electronics and Devices of the Ministry of Education&Shaanxi Key Laboratory of Information Photonic Technique,Xi'an Jiaotong University,Xi'an 710049,China [2]School of Physics and Information Technology,Ningxia Teachers University,Guyuan 756000,China

出　　处：《Chinese Physics B》2012年第2期309-316,共8页中国物理B（英文版）

基　　金：supported by the 973 Program of China (Grant No.2012CB921804);the National Natural Science Foundation of China (Grant Nos.10974151,61078002,61078020,11104214,61108017,and 11104216);the New Century Excellent Talent Project of the Ministry of Education of China (Grant No.08-0431);the Interdisciplinary Project of Xi’an Jiaotong University,China (Grant Nos.xjj20100100 and xjj20100151)

摘　　要：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.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.

关 键 词：four-wave mixing spatial splitting ENHANCEMENT SUPPRESSION 

分 类 号：O437[机械工程—光学工程] O562[理学—光学]