Opt Express. 2023 Apr 24;31(9):14715-14725. doi: 10.1364/OE.488852.
We investigate to the best of our knowledge the first time the interactions of in-phase and out-of-phase Airy beams in Kerr, saturable and nonlocal nonlinear media with fourth-order diffraction using split-step Fourier transform method. Directly numerical simulations show that normal and anomalous fourth-order diffractions have profound effects on the interactions of the Airy beams in Kerr and saturable nonlinear media. We demonstrate the dynamics of the interactions in detail. In nonlocal media with fourth-order diffraction, nonlocality induces a long-range attractive force between Airy beams, leading to the formation of stable bound states of both in-phase and out-of-phase breathing Airy soliton pairs which are always repulsive in local media. Our results have potential applications in all-optical devices for communication and optical interconnects, etc.
我们首次利用分步傅里叶变换方法研究了在 Kerr、饱和和非局域非线性介质中同相和非同相 Airy 光束的相互作用，其中考虑了四阶衍射。直接数值模拟表明，正常和反常四阶衍射对 Kerr 和饱和非线性介质中 Airy 光束的相互作用有深远的影响。我们详细演示了相互作用的动力学。在具有四阶衍射的非局域介质中，非局域性会在 Airy 光束之间产生长程吸引力，导致同相和非同相呼吸 Airy 孤子对的稳定束缚态的形成，而在局域介质中它们总是相互排斥的。我们的结果在用于通信和光互连等的全光器件中有潜在的应用。
