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D-FFT Calculation of Collins' Formula
LI Junchang
CHINESE JOURNAL OF COMPUTATIONAL PHYSICS
2008, 25 (3):
330-334.
Collins' formula and its inverse calculation are expressed in a convolution form. Corresponding transfer function is deduced. Sampling theory conditions in fast Fourier transform (FFT) to calculate Collins' formula are discussed. Diffraction field as optic wave passes through an optical system and reconstruction of incident plane are shown.
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