利用分步傅里叶法, 数值研究了艾里光束在自聚焦克尔非线性介质中的传输。结果表明, 当较强的非线性作用于艾里光束时, 主瓣能量在传输过程中会发生脱落形成具有周期振荡的空间孤子。随着非线性的增强, 该孤子的振荡周期与半高宽都减小。调节艾里光束的入射角度时, 脱落孤子的传输轨迹随之发生变化, 不同于艾里光束的是, 艾里孤子的传输始终保持直线传输。

The propagation of Airy beams in self-focusing Kerr nonlinear media was investigated numerically by using split-step Fourier method. It is shown that spatial soliton with periodic oscillation can be formed out of the centered energy about the Airy main lobe during the propagation on the influence of stronger nonlinearity. With the increasing of the nonlinearity, the periodic and full width at half maximum (FWHM) of the soliton are decreased. The propagation trajectory of the shedding soliton is changed when the initial launch angle of Airy beam is adjusted. Different from Airy beams, the propagation of the Airy soliton is always maintaining straight line.