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Arbitrary shape surface Fresnel diffraction
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DOI：10.1364/OE.20.009335.png)
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Abstract
En 中文
Fresnel diffraction calculation on an arbitrary shape surface is proposed. This method is capable of calculating Fresnel diffraction from a source surface with an arbitrary shape to a planar destination surface. Although such calculation can be readily calculated by the direct integral of a diffraction calculation, the calculation cost is proportional to O(N-2) in one dimensional or O(N-4) in two dimensional cases, where N is the number of sampling points. However, the calculation cost of the proposed method is O(N logN) in one dimensional or O(N-2 logN) in two dimensional cases using non-uniform fast Fourier transform. (C)2012 Optical Society of America
Keywords:
COMPUTER-GENERATED HOLOGRAMS
FAST FOURIER-TRANSFORMS
PLANES
SPACE
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