Balakin A A, Skobelev S A, Andrianov A V, Anashkina E A, Litvak A G
Opt Lett. 2021 Jan 15;46(2):246-249. doi: 10.1364/OL.401914.
The coherent propagation and amplification of high-power laser radiation in a multicore fiber consisting of a square array of weakly bound cores are studied. Exact stable analytical solutions are found for the out-of-phase mode, which describes the coherent propagation of wave beams in such fibers. The analytical results are confirmed by direct numerical simulation of the wave equation. The stability conditions of the out-of-phase mode in the active medium are found.
研究了高功率激光辐射在由弱束缚纤芯的方形阵列组成的多芯光纤中的相干传播和放大。找到了异相模式的精确稳定解析解，该模式描述了光束在这种光纤中的相干传播。通过波动方程的直接数值模拟证实了分析结果。找到了有源介质中异相模式的稳定性条件。
