超短艾里脉冲传输过程中色散效应的分析  

Dispersion effect on Ultrashort Airy Pulse Propagation

作　　者：赵晗[1] 宋振明[1] 林俞先[1] 

机构地区：[1]天津工业大学理学院物理系,天津300387

出　　处：《光学学报》2015年第A01期429-434,共6页Acta Optica Sinica

基　　金：国家自然科学基金（11104201）

摘　　要：运用分步傅里叶法对艾里脉冲的色散效应进行了数值模拟及分析。重点分析了二阶、三阶色散效应同时作用下，艾里脉冲的时域波形传输特性，并讨论了在存在初始啁啾以及弱非线性效应作用的情况下脉冲时域波形变化。结果表明正三阶色散效应将引起脉冲压缩，光强增大；负三阶色散作用将导致脉冲展宽，光强下降。在考虑初始啁啾和非线性效应与色散的共同作用时，发现随着三阶色散作用的增大，脉冲的传输质量下降，也说明了三阶色散的重要性。The Airy pulse dispersion effect by the split-step Fourier transform method （SSFM） is sumulated and analyzed. The wave transmission characteristic of Airy pulse under second and third-order dispersion effects in temporal domain is discussed. Furthermore, the influence of the initial chirp and weakly nonlinear effects is studied. The results show that the positive third-order dispersion effect leads to pulse compression and amplitude increase. On the other hand, the negative third-order dispersion effects leads to pulse broadening and amplitude decrease. When taking the effect of the initial chirp and weakly nonlinear effects into account. It is found that as the third-order dispersion effects growing, the quality of Airy pulse reduces.

关 键 词：超快光学 超短艾里脉冲 色散 分步傅里叶法 啁啾 弱非线性效应 

分 类 号：O436[机械工程—光学工程]