Dark incoherent spatial solitons in logarithmically saturable nonlinear media

• 来源期刊: 中国物理B（英文版）
• 关键词: incoherent spatial solitons coherence length logarithmically nonlinear media
• 年，卷（期）: 2009,（6）
• 页码范围: 2359-2363
• 页数: 5页
• 语种: 英文

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.