Shifted band-extended angular spectrum method for off-axis diffraction calculation

被引：19
作者：
Zhang, Wenhui [1 ]
Zhang, Hao [1 ]
Matsushima, Kyoji [2 ]
Jin, Guofan [1 ]
机构：
[1] Tsinghua Univ, Dept Precis Instrument, State Key Lab Precis Measurement Technol & Instru, Beijing 100084, Peoples R China
[2] Kansai Univ, Dept Elect & Elect Engn, 3-3-35 Yamate Cho, Suita, Osaka 5648680, Japan
来源：
OPTICS EXPRESS | 2021年 / 29卷 / 07期
基金：
中国国家自然科学基金;
关键词：
COMPUTER-GENERATED HOLOGRAM; FOURIER-TRANSFORM; OPTICAL DIFFRACTION; ALGORITHM; PROPAGATION; SIMULATION; PLANES; FIELD;
D O I：
10.1364/OE.419096
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
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 allow us to calculate the off-axis diffraction in a wide propagation range by extending the effective bandwidth using the nonuniform fast Fourier transform. The calculation accuracy is higher than that of existing techniques, such as the shifted-Fresnel method and shifted band-limited angular spectrum method, not only in the near field but also in the far field. Numerical examples and accuracy as well as theoretical formulation are presented to confirm validity of the proposed method. (C) 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
引用
收藏
页码：10089 / 10103
页数：15
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