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Generalized rectangular finite difference beam propagation method

机译:广义矩形有限差分光束传播方法

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摘要

A method is proposed that allows for significant improvement of the numerical efficiency of the standard finite difference beam propagation algorithm. The advantages of the proposed method derive from the fact that it allows for an arbitrary selection of the preferred direction of propagation. It is demonstrated that such flexibility is particularly useful when studying the properties of obliquely propagating optical beams. The results obtained show that the proposed method achieves the same level of accuracy as the standard finite difference beam propagation method but with lower order Pade approximations and a coarser finite difference mesh.
机译:提出了一种可以显着提高标准有限差分光束传播算法数值效率的方法。所提出的方法的优点源于以下事实:它允许任意选择优选的传播方向。证明了这种柔性在研究倾斜传播的光束的特性时特别有用。所得结果表明,该方法达到了与标准有限差分光束传播方法相同的精度水平,但具有较低阶的Pade近似值和较粗糙的有限差分网格。

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