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arXiv 0709.1913nlin.PS
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耦合NLS系统的调制不稳定性和非定域管理

Modulational instability and nonlocality management in coupled NLS system

Evgeny V. Doktorov, Maxim A. Molchan

摘要:

用解析和数值方法研究了非局域克尔型介质中两个相互作用波的调制不稳定性。对于一个通用的选择波的振幅,我们给出了一个完整的描述零群速度失配的稳定/不稳定的制度。结果表明,非局域性抑制相当大的增长率和带宽的不稳定性。对于非零群速度失配,我们进行了几何分析的非局域性管理,可以提供稳定的波,否则不稳定的局部介质。

英文摘要:

The modulational instability of two interacting waves in a nonlocal Kerr-type medium is considered analytically and numerically. For a generic choice of wave amplitudes, we give a complete description of stable/unstable regimes for zero group-velocity mismatch. It is shown that nonlocality suppresses considerably the growth rate and bandwidth of instability. For nonzero group-velocity mismatch we perform a geometrical analysis of a nonlocality management which can provide stability of waves otherwise unstable in a local medium.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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