中国物理B ›› 2009, Vol. 18 ›› Issue (6): 2359-2363.doi: 10.1088/1674-1056/18/6/040

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Dark incoherent spatial solitons in logarithmically saturable nonlinear media

张彦鹏1, 刘爽2, 卢克清3, 张贻齐4, 张美志4, 李可昊4   

  1. (1)Department of Electronic Science and Technology, Xi'an Jiaotong University, Xi'an 710049, China; (2)Optoelectronic Technology Department--Optoelectronic Tracking Technology Research Center, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China;Graduate School of the Chinese Academy of Sciences, Beijing 1000; (3)State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; (4)State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China;Graduate School of the Chinese Academy of Sciences, Beijing 100039, China
  • 收稿日期:2008-10-15 修回日期:2008-11-05 出版日期:2009-06-20 发布日期:2009-06-20
  • 基金资助:
    Project supported by the Major Program of the National Natural Science Foundation of China (Grant No 10674176).

Dark incoherent spatial solitons in logarithmically saturable nonlinear media

Zhang Yi-Qi(张贻齐)a)c)†, Lu Ke-Qing(卢克清)a), Zhang Mei-Zhi(张美志)a)c), Li Ke-Hao(李可昊)a)c), Liu Shuang(刘爽)b)c), and Zhang Yan-Peng(张彦鹏)d)   

  1. a State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; b Optoelectronic Technology Department{Optoelectronic Tracking Technology Research Center, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; c Graduate School of the Chinese Academy of Sciences, Beijing 100039, China; d Department of Electronic Science and Technology, Xi'an Jiaotong University, Xi'an 710049, China
  • Received:2008-10-15 Revised:2008-11-05 Online:2009-06-20 Published:2009-06-20
  • Supported by:
    Project supported by the Major Program of the National Natural Science Foundation of China (Grant No 10674176).

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摘要： This paper studies numerically the dark incoherent spatial solitons propagating in logarithmically saturable nonlinear media by using a coherent density approach and a split-step Fourier approach for the first time. Under odd and even initial conditions, a soliton triplet and a doublet are obtained respectively for given parameters. Simultaneously, coherence properties associated with the soliton triplet and doublet are discussed. In addition, if the values of the parameters are properly chosen, five and four splittings from the input dark incoherent spatial solitons can also form. Lastly, the grayness of the soliton triplet and that of the doublet are studied, in detail.

关键词: incoherent spatial solitons, coherence length, logarithmically nonlinear media

Abstract: This paper studies numerically the dark incoherent spatial solitons propagating in logarithmically saturable nonlinear media by using a coherent density approach and a split-step Fourier approach for the first time. Under odd and even initial conditions, a soliton triplet and a doublet are obtained respectively for given parameters. Simultaneously, coherence properties associated with the soliton triplet and doublet are discussed. In addition, if the values of the parameters are properly chosen, five and four splittings from the input dark incoherent spatial solitons can also form. Lastly, the grayness of the soliton triplet and that of the doublet are studied, in detail.

Key words: incoherent spatial solitons, coherence length, logarithmically nonlinear media

中图分类号:  (Optical solitons; nonlinear guided waves)

  • 42.65.Tg
42.25.Kb (Coherence)