TRANSPARENT BOUNDARY-CONDITION FOR BEAM PROPAGATION
TRANSPARENT BOUNDARY-CONDITION FOR BEAM PROPAGATION
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DOI：
10.1364/ol.16.000624
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发表时间：
1991-05-01
期刊：
影响因子：
3.6
通讯作者：
HADLEY, GR
中科院分区：
文献类型：
--
作者：
HADLEY, GR
提出了一种新的边界条件算法，该算法以最小的反射系数（通常为10(-5)）自由通过向外辐射，同时抑制入射辐射的通量。与常用的吸收器方法相比，该算法不包含可调参数，因此与问题无关。它自然地适应于标准的Crank-Nicholson差分格式，并被证明对二维和三维问题都是准确和稳健的。
A new boundary condition algorithm is presented that passes outgoing radiation freely with a minimum reflection coefficient (typically 10(-5)) while inhibiting the flux of incoming radiation. In contrast to the commonly used absorber method, this algorithm contains no adjustable parameters and is thus problem independent. It adapts naturally to a standard Crank-Nicholson difference scheme and is shown to be accurate and robust for both two- and three-dimensional problems.