孤子光束倾斜入射非局域非线性分界面的传输特性研究

利用数值模拟的方法研究了(1+1)维孤子光束倾斜入射非局域非线性分界面的传输规律。研究发现,光束在非局域非线性分界面处的传输规律的光强依赖特性可以用入射光束的5个束宽节点来刻画,分别标志导致反射或透射光束的传输规律发生突变时的入射光束的5个临界光强值。计算还发现,如果保持入射光束束宽不变,而增加其功率,呼吸子光束入射分界面后的传输也能呈现相应的5个突变点,说明功率依赖实质上就是光强依赖。此外还研究了5个束宽节点的值随非局域程度的变化而变化的规律。

Calculation of the Cylindrical and Spherical Underground Constructions in the Nonlinear Inhomogeneous Rock Massive under the Different Emergency Influences

Reliable and economical design of constructions and facilities are primarily caused by the determination of the stress-strain condition and strength assessing of structural elements, and the entire structure as a whole under various pressing conditions and taking into account the real properties of materials. The resulting equations allow conducting a qualitative analysis of the dependency of the structures＇ stress-strain condition from the material heterogeneity and, particularly, answering the question ~hnut th~ inflHenee nfthe ~nnrnYimntinn rnethnd of heterogeneity functions on the results of calculation.