1) ring focusing
环聚焦
1.
The ring focusing system for laser propulsion is proposed.
设计了激光推进环聚焦系统,在考虑入射激光束与光船聚焦系统主轴偏离情况下,建立研究环聚焦性能的数学模型,并数值模拟研究了环形"点火"线的形状、大小、能流密度以及点火区域空间特性。
2.
The ring focusing optical system was designed,also the effects of reflection mirror s surface coarseness were considered.
设计了环聚焦光学系统,考虑反射镜表面粗糙度对聚焦性能的影响,利用"光线追踪法"建立了研究环形"点火"线形状、大小以及能流密度的数学模型。
2) self-focusing ring
自聚焦环
1.
Forming and suppression of self-focusing ring for circle symmetric super-Gaussian beam;
圆对称超高斯光束自聚焦环的形成与抑制
2.
In this work, the self-focusing ring originated from a rotation symmetric super-Gaussian beam (RSSGB) incident on the Nd∶glass medium is described in detail, with the aid of the numerical solution to the nonlinear paraxial wave equation.
通过数值求解非线性近轴波方程 ,详细描述了在钕玻璃介质中传输的强激光圆对称超高斯光束形成的自聚焦环 ,并展示了初始光束受到扰动引起环分裂的现象。
3.
When a CSSGLB with initial perturbations travelling in this medium, the self-focusing rings are to be broken up and form high intense filaments.
通过数值求解非线性薛定谔方程 ,详细描述了圆对称超高斯光束在 Nd:glass介质中传输形成的自聚焦环。
4) ring focusing
环型聚焦
5) toroidal focusing mirror
环面聚焦镜
1.
Slope error and aberration analysis for XRDX beamline toroidal focusing mirror;
X射线衍射和散射光束线环面聚焦镜的面形精度与像差分析
6) Torodial focusing mirror
超环面聚焦镜
补充资料：冲击波聚焦效应