这段代码可以为您提供如何计算从近场到远场的光场传播。此外，还将一些常见的光学问题如单狭缝和双狭缝来模拟传播场，并将这些结果与光学教科书进行比较。
This code can provide you with how to calculate the propagating optical field from near-field to far-field. Moreover, I raise some common optical problems, such as a single slit and double slits, to simulate the propagating field and you can compare these results with your optics textbooks.
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