Stable High-dimensional spatial optical solitons and vortices in an active Raman gain medium

Stable High-dimensional spatial optical solitons and vortices in an active Raman gain medium
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主动拉曼增益介质中稳定的高维空间光学孤子和涡旋

DOI:
10.7566/jpsj.84.054402
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发表时间:
2015-04
影响因子:
1.7
通讯作者:
Huang Guoxiang
Huang Guoxiang
中科院分区:
物理与天体物理4区
文献类型:
--
作者:
Li Hui-jun;Duan Yu-hua;Wen Wen;Huang Guoxiang

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提出了一种在室温下在M型五能级有源拉曼增益介质中产生稳定的高维空间光孤子和涡旋的方案。导出了一个具有二维俘获势的(2+1)维[(2+1)D]非线性薛定谔(NLS)方程.我们发现,通过调节系统参数,克尔非线性和外部势的符号可以被随意操纵。然后,我们提出了三种类型的NLS方程,提供了它们的孤子解,并分析了它们的稳定性。最后讨论了具有相同二维囚禁势的(2+1)D和(3+1)D系统孤子解的差异。
We propose a scheme to produce stable high-dimensional spatial optical solitons and vortices in an M-type five-level active Raman gain medium at room temperature. We derive a (2+1)-dimensional [(2+1)D] nonlinear Schrodinger (NLS) equation with a 2D trapping potential, which is contributed by an assisted field. We show that by adjusting the system parameter, the signs of the Kerr nonlinearity and the external potential can be manipulated at will. We then present three types of NLS equation, provide their soliton solutions, and analyze their stabilities. We finally discuss the differences in the soliton solutions between (2+1)D and (3+1)D systems with the same 2D trapping potential.
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