文献类型：期刊文献

英文题名：Three-wave superluminal vector optical solitons in a seven-level atomic system

作者：Li, Bin[1];Qi, Yihong[1];Niu, Yueping[1];Gong, Shangqing[1]

机构：[1]East China Univ Sci & Technol, Dept Phys, Shanghai 200237, Peoples R China

年份：2017

卷号：26

期号：4

外文期刊名：JOURNAL OF NONLINEAR OPTICAL PHYSICS & MATERIALS

收录：;EI(收录号：20193607411850);WOS:【SCI-EXPANDED(收录号:WOS:000418858100014)】；

基金：This work was supported by the National Natural Sciences Foundation of China (Grant Nos. 11274112, 11774089 and 11474092), the Shanghai Municipal Natural Science Foundation (Grant No. 13ZR1411700), and the scholarship from China Scholarship Council (Grant CSC No. 201506745029).

语种：英文

外文关键词：Vector optical solitons; ARG; superluminal group velocity; Kerr nonlinearity

摘要：We investigate generation of three-wave coupled superluminal vector optical solitons in an active-Raman-gain (ARG) seven-level atomic system. By solving the probability amplitude equations, the linear, nonlinear and dispersion of the optical properties are analyzed for the three probe fields, which show that the dispersion effects of the probe fields can be well balanced by self-phase and cross-phase modulation of the Kerr nonlinearities and the gain can be well suppressed under certain conditions. Therefore, three-wave coupled optical vector solitons with superluminal propagating group velocity can be formed in the system. Moreover, this atomic system allows the existence of various types of three-wave superluminal vector solitons by adjusting the system parameters. We also give real parameters of 87Rb atoms for generating three-wave superluminal vector solitons, which may provide reference for experiments.