无透镜傅立叶变换电子全息术在涡旋光束分析中的应用

IF 1.8 4区工程技术

Microscopy Pub Date : 2019-11-01 DOI:10.1093/jmicro/dfaa008

Ken Harada;Yoshimasa A Ono;Yoshio Takahashi

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引用次数: 3

摘要

发展了无透镜傅立叶变换全息术。通过将布拉格衍射波视为物波，将透射球面波视为参考波，这两种波被干涉并记录为远离互易平面的全息图。在这种方法中，全息图的重建只需要一次傅立叶变换。将该方法应用于旋涡光束的分析效果良好，得到了旋涡光束在倒易平面上的振幅和相位分布。将传统的全息术与发展起来的无透镜傅立叶变换全息术相结合，可以连续地重建和分析从实空间到倒易空间的电子波。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Lensless fourier transform electron holography applied to vortex beam analysis

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Lensless fourier transform electron holography applied to vortex beam analysis

Lensless Fourier transform holography has been developed. By treating Bragg diffraction waves as object waves and a transmitted spherical wave as a reference wave, these two waves are interfered and recorded as holograms away from the reciprocal plane. In this method, reconstruction of holograms requires only one Fourier transform. Application of this method to analyze vortex beams worked well and their amplitude and phase distributions were obtained on the reciprocal plane. By combining the conventional holography with the developed lensless Fourier transform holography, we can reconstruct and analyze electron waves from the real to reciprocal space continuously.

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来源期刊

Microscopy 工程技术-显微镜技术

自引率

11.10%

发文量

审稿时长

>12 weeks

期刊介绍： Microscopy, previously Journal of Electron Microscopy, promotes research combined with any type of microscopy techniques, applied in life and material sciences. Microscopy is the official journal of the Japanese Society of Microscopy.