两束艾里光束在Kerr和饱和非线性介质中的相互作用  

Interactions of two Airy beams in Kerr and saturable nonlinear media

作　　者：卢克清[1] 胡凯[1] 陈卫军[1] 于会敏[1] 张宝菊[1] 

机构地区：[1]天津工业大学电子与信息工程学院,天津300387

出　　处：《天津工业大学学报》2015年第4期80-84,共5页Journal of Tiangong University

基　　金：天津市自然科学基金资助项目(13JCYBJC16400)

摘　　要：采用分步傅里叶法对两艾里光束在Kerr介质和饱和非线性介质中同向和反向传输时的相互作用进行了数值模拟,探讨了两艾里光束的入射光间隔对相互作用的影响.结果表明:当两艾里光束的入射间隔大于其主瓣宽度时,在两介质中同向或反向传输的孤子均被束缚在原入射光束中稳定传输,无相互作用;当两光束的入射光间隔小于等于主瓣宽度时,在Kerr介质中同向传输的两光束在光强E=3时相互吸引而在E=4时由最初的相互吸引变为相互排斥,反向传输保持相互排斥的性质;在饱和非线性介质中两光束在任意光强都保持同向相互吸引、反向相互排斥的特性.The interactions of two in-phase and out-of-phase Airy beams in Kerr and saturable nonlinear （NL） media are investigated numerically by using the distribution Fourier method. The influence of the incident light interval on the interaction of two Airy beams is discussed. The results show that if the interval between two incident beams is larger than the widths of their main lobes, the generated soliton pairs just propagate individually and do not interact. However, if the interval is comparable to the widths of the main lobes, in Kerr medium, when E = 3, two in-phase Airy beams transmission attract each other, and when E = 4, the two beams become mutually exclusive instead of the initial attract each other; if the two beams transmit in out-of-phase, they always maintain reply. In saturable nonlinear media, the two beams are always attract each other when they are in the same direction and mutually exclusive in out-of-phase to arbitrary intensity.

关 键 词：艾里光束 KERR介质 饱和非线性介质 相互作用 

分 类 号：O436.1[机械工程—光学工程]