The enhanced compression of fundamental femtosecond solitons can be obtained by combined effects of negative third order dispersion and Raman self scattering in the fibers.
研究表明，在色散缓变光纤中利用拉曼自散射效应与负三阶色散效应的相互作用，可以获得更高压缩比的超短光脉。
Based on the second-order coherence function theory, authors have studied nonlinear effects of third-and fifth-order on polarization beats in a cascade three-level system (TPBCTS and FPBCTS).
本文采用二阶相干函数理论研究了级联三能级系统中三阶及五阶极化拍频(TPBCTS及FPBCTS)的非线性效应。
The third aspect is that the direction variety of the lateral load of the structure leads to the change of the influence caused by second-order effects on the internal force of whole structure.
第三个方面是由于结构所受的横向荷载的方向变化，引起的二阶效应对整个结构内力影响的变化。
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