Complex Gaussian function expansion 复高斯函数展开法 ; 复高斯函数展开
From Collins formula, and using the expandedform of complex Gaussian function to pictures the rectangle function,the expression standing for the distribution of axial intensity is derived.
从Collins公式出发，利用门函数的复高斯函数展开法得到了轴上光强分布公式。
参考来源 - 复变量双曲余弦平方—高斯光束的焦移和焦开关·2,447,543篇论文数据，部分数据来源于NoteExpress
With the rectangular function expanded into a finite sum of complex Gaussian functions, an approximate analytical propagation equation of HChG beams is derived.
采用将矩形函数展开为有限个复高斯函数之和的方法，推导出了光场分布的解析表达式。
It is shown that the improved algorithm provides more accurate calculation results than the complex Gaussian function expansion, so long as the number of Fourier series is no less than 30.
研究表明，只要傅里叶级数项数不少于30，改进后的算法比直接用复高斯函数展开具有更高的计算精度。
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