Shifted band-extended angular spectrum method for off-axis diffraction calculation.
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DOI: 10.1364/oe.419096
Abstract: The shifted band-extended angular spectrum method (Shift-BEASM) is proposed to calculate free-space diffraction between two parallel planes with an off-axis offset. Off-axis numerical propagation is useful for simulating non-paraxial and large-scale fields. The proposed Shift-BEASM… read more here.
Keywords: angular spectrum; method; shifted band; spectrum method ... See more keywords
Fast numerical propagation in high-NA imaging using the resampling angular spectrum method.
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DOI: 10.1364/oe.470800
Abstract: Numerical propagation calculation is a fundamental research topic in optical engineering. The standard angular spectrum method (ASM) is accurate but time- and memory-consuming, especially for high-NA systems. In this work, we propose a fast and… read more here.
Keywords: spectrum method; spectrum; numerical propagation; angular spectrum ... See more keywords
Non-uniform angular spectrum method in a complex medium based on iteration.
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DOI: 10.1364/ol.454171
Abstract: The traditional angular spectrum method has an inherent problem that the region of diffraction propagation should be homogeneous. However, in some cases, the medium of the diffraction propagation region is inhomogeneous. In this Letter, based… read more here.
Keywords: spectrum method; complex medium; method; diffraction ... See more keywords