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Coherent propagation of powerful out-of-phase wave beams in linear arrays of weakly coupled cores
EPL ( IF 1.8 ) Pub Date : 2021-01-06 , DOI: 10.1209/0295-5075/132/54001
A. A. Balakin , S. A. Skobelev , A. G. Litvak

The coherent propagation and amplification of high-power laser beams in a multicore fiber (MCF) of $1\times N$ and $2\times N$ lattices of weakly coupled cores is studied. Exact stable analytical nonlinear solutions are found in the form of the out-of-phase distribution that describe the coherent propagation of wave beams in such MCFs. The use of these distributions makes it possible to operate with laser radiation with a power of up to 2N times of the critical self-focusing power in homogeneous media. The analytical results are confirmed by the direct numerical simulation of the wave equation. The limitations on active fiber parameters for stable amplification of the found out-of-phase solution are determined.



中文翻译:

强耦合光束在弱耦合磁芯线性阵列中的相干传播

研究了高功率激光束在弱耦合纤芯$ 1 \次N $ $ 2 \倍N $ 晶格的多芯光纤(MCF)中的相干传播和放大。可以以异相分布的形式找到精确的稳定解析非线性解,该解描述了此类MCF中光束的相干传播。通过使用这些分布,可以在均匀介质中以高达临界自聚焦功率2 N倍的功率进行激光辐射操作。波动方程的直接数值模拟证实了分析结果。确定了用于稳定放大发现的异相溶液的活性纤维参数的限制。

更新日期:2021-01-06
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