Abstract

The angular spectrum method can calculate diffraction calculation in a high numerical aperture, unlike Fresnel diffraction. However, this method does not allow us to calculate at different sampling rates on source and destination planes. In this paper, we propose a scaled angular spectrum method that calculates diffraction at different sampling rates on source and destination planes, and verify the method in a one-dimensional case. In addition, we describe the two numerical implementations.

© 2012 Optical Society of America

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