Moving Compacton—like Kink in a Purely Anharmonic Lattice with Symmetric On—Site Potential

We study the moving compacton-like kink in the system of a purely anharmoinc lattice with symmetric onsite poential by a direct algebraic method.It is found that the localization of the compactons is related to the nonlinear coupling parameter Cnl and the potential barrier height V0 of the double well potential,and the velocity of the propagation of the compacton is determined by the localization parameter q and the potential barrier height V0.Numerical calculation results demonstrate that the compacton is stable when it moves along the lattice chain.     

LD端泵全固化紫外激光器

文章围绕全固态355nm紫外激光器进行了理论和实验研究,根据相位匹配原理,晶体相位匹配特点及其光学特性,选用了LBO/LBO晶体,三混频LBO晶体在输出面采用布儒斯特角切割,对于对P偏振方向的基频光和紫外光具有高透过性,同时起到分光作用,由于不用镀膜,明显地降低了紫外激光对于晶体的损伤.采用声光调Q技术,在LD单端泵功率为27W,重复频率为20kHz时,获得了平均功率为1.85W、脉宽为11ns的355nm紫外激光输出.