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)
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
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.
Received: 15 October 2008
Revised: 05 November 2008
Accepted manuscript online:
Fund: Project supported by the Major
Program of the National Natural Science Foundation of China (Grant
No 10674176).
Cite this article:
Zhang Yi-Qi(张贻齐), Lu Ke-Qing(卢克清), Zhang Mei-Zhi(张美志), Li Ke-Hao(李可昊), Liu Shuang(刘爽), and Zhang Yan-Peng(张彦鹏) Dark incoherent spatial solitons in logarithmically saturable nonlinear media 2009 Chin. Phys. B 18 2359
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