Graduate School of Engineering, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan.
Opt Lett. 2012 Oct 1;37(19):4128-30. doi: 10.1364/OL.37.004128.
The angular spectrum method (ASM) calculates 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 Letter, we propose a scaled ASM that calculates diffraction at different sampling rates on source and destination planes using the nonuniform fast Fourier transform.
角谱法（ASM）计算高数值孔径中的衍射计算，与菲涅耳衍射不同。然而，该方法不允许我们在源平面和目标平面上以不同的采样率进行计算。在本信中，我们提出了一种缩放角谱法，该方法使用非均匀快速傅里叶变换在源平面和目标平面上以不同的采样率计算衍射。
