When evaluating beam shape coefficients which encode the description of laser beams, for use in some T-matrix approaches such as generalized Lorenz-Mie theory or Extended Boundary Condition Method for structured beams, by using finite series, blowing-ups are observed. When numerical inaccuracies are ruled out, it has been firmly demonstrated that such blowing-ups correspond to genuine physical phenomena, namely they describe evanescent waves. We propose a method to eliminate these blowing-ups and the corresponding evanescent waves (at least most of them).

中文翻译：

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使用有限级数技术评估某些 T 矩阵方法的波束形状系数时，以高斯波束为例，消除了爆炸和倏逝波


当评估编码激光束描述的光束形状系数时，对于某些 T 矩阵方法，例如广义 Lorenz-Mie 理论或结构光束的扩展边界条件方法，通过使用有限级数，可以观察到爆炸。当排除数值的不准确性时，已经有力地证明了这种爆炸对应于真正的物理现象，即它们描述了消逝的波。我们提出了一种方法来消除这些爆炸和相应的消逝波（至少是大多数）。