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arXiv 1408.3579physics.opticsnlin.PS
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小议:局域增益支持的空间孤子

Mini-review: Spatial solitons supported by localized gain

Boris A. Malomed

摘要:

在有耗非线性介质中产生稳定的一维和二维局域模是光学和等离子体学中的一个基本问题。本文给出了一个简短的回顾,为此目的而阐述的理论方法,使用本地化增益应用在一个或几个“热点”(HS)。导言调查了这一方法所针对的广泛的一类模型。其他部分集中在一些详细的基本一维连续和离散系统,其中的结果可以得到,部分或全部,在一个分析的形式(通过与数值结果比较验证),这提供了一个更深入的洞察光束在耗散非线性介质中的非线性动力学。特别是考虑了具有自聚焦(SF)或自散焦(SDF)克尔非线性的普通波导中的单、双HS,它们引起了相当复杂的结果,尽管模型看起来很简单,但附着在嵌入SF或SDF介质中的PT对称偶极子上的孤子,钉扎在布拉格光栅中HS上的间隙孤子,以及在自聚焦(SF)或自散焦(SDF)克尔非线性下的孤子。和具有热位的一维晶格中的离散孤子。

英文摘要:

The creation of stable 1D and 2D localized modes in lossy nonlinear media is a fundamental problem in optics and plasmonics. This article gives a short review of theoretical methods elaborated for this purpose, using localized gain applied at one or several "hot spots" (HSs). The introduction surveys a broad class of models for which this approach was developed. Other sections focus in some detail on basic 1D continuous and discrete systems, where the results can be obtained, partly or fully, in an analytical form (verified by comparison with numerical results), which provides a deeper insight into the nonlinear dynamics of optical beams in dissipative nonlinear media. In particular, considered are the single and double HSs in the usual waveguide with the self-focusing (SF) or self-defocusing (SDF) Kerr nonlinearity, which give rise to rather sophisticated results, in spite of apparent simplicity of the model; solitons attached to a PT-symmetric dipole embedded into the SF or SDF medium; gap solitons pinned to an HS in a Bragg grating; and discrete solitons in a 1D lattice with a "hot site".

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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