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Direct calculation of tightly focused field in an arbitrary plane
Cai, Yanan1,2; Wang, Zhaojun1,2; Liang, Yansheng1; Ren, Feifei1,2; Yao, Baoli1; Lei, Ming1; Yan, Shaohui1
Source PublicationOptics Communications
Contribution Rank1

The Debye–Wolfdiffraction integral is a powerful tool for computing the focused field of an illumination by a high numerical aperture (NA) objective lens. With the help of the fast Fourier Transform (FT) algorithm, this integral can be evaluated at a high processing speed. In general, the FT pair is the illumination field at the entrance pupil and the focused field in a transverse plane in the focal region, i.e., the xy-plane. To analyze the field distribution of special beams in a titled plane, conventional calculations require a stack of slices of fields in the xy-planes plane by plane. Here, we propose a modified FT-based diffraction integral algorithm that exhibits a direct FT connection between the illumination field and the field in an arbitrary plane in the focal volume. As a result, significant time saving is achieved with the proposed algorithm. The algorithm is verified by numerous simulations and should be helpful to quickly design holograms to shape complex focus used in holographic optical tweezers. © 2019 Elsevier B.V.

KeywordFourier optics Optical field shaping Focus Debye-Wolf integral
Indexed BySCI ; EI
WOS IDWOS:000477076200049
PublisherElsevier B.V.
EI Accession Number20192507061282
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Document Type期刊论文
Corresponding AuthorCai, Yanan
Affiliation1.Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, State Key Laboratory of Transient Optics and Photonics, Shaanxi; Xi'an; 710119, China;
2.University of Chinese Academy of Sciences, Beijing; 100049, China
Recommended Citation
GB/T 7714
Cai, Yanan,Wang, Zhaojun,Liang, Yansheng,et al. Direct calculation of tightly focused field in an arbitrary plane[J]. Optics Communications,2019,450:329-334.
APA Cai, Yanan.,Wang, Zhaojun.,Liang, Yansheng.,Ren, Feifei.,Yao, Baoli.,...&Yan, Shaohui.(2019).Direct calculation of tightly focused field in an arbitrary plane.Optics Communications,450,329-334.
MLA Cai, Yanan,et al."Direct calculation of tightly focused field in an arbitrary plane".Optics Communications 450(2019):329-334.
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