Xin Feifei, Falsi Ludovica, Pierangeli Davide, Fusella Fabrizio, Perepelitsa Galina, Garcia Yehudit, Agranat Aharon J, DelRe Eugenio
Dipartimento di Fisica, Università di Roma "La Sapienza," 00185 Rome, Italy.
College of Physics and Materials Science, Tianjin Normal University, 300387, Tianjin, China.
Phys Rev Lett. 2022 Jul 22;129(4):043901. doi: 10.1103/PhysRevLett.129.043901.
We experimentally and numerically explore the role of dimensionality in multiple (three or more) soliton fusion supported by nonreciprocal energy exchange. Three-soliton fusion into an intense wave is found when an extra dimension, with no broken inversion symmetry, is involved. The phenomenon is observed for 2+1D spatial waves in photorefractive crystals, where solitons are supported by a spatially local saturated Kerr-like self-focusing and fusion is driven by the leading nonlocal correction, the spatial analog of the nonlinear Raman effect.
我们通过实验和数值模拟探究了维度在由非互易能量交换支持的多个（三个或更多）孤子融合中的作用。当涉及一个没有反演对称性破缺的额外维度时，发现了三个孤子融合成一个强光波的现象。在光折变晶体中的2 + 1D空间波中观察到了这种现象，其中孤子由空间局部饱和的类克尔自聚焦支持，并且融合由领先的非局部校正驱动，这是非线性拉曼效应的空间类似物。
