Quantitative measurement of orbital angular momentum in electron microscopy

被引：23
|
作者：
Clark, L. [1 ]
Beche, A. [1 ]
Guzzinati, G. [1 ]
Verbeeck, J. [1 ]
机构：
[1] Univ Antwerp, EMAT, B-2020 Antwerp, Belgium
来源：
PHYSICAL REVIEW A | 2014年 / 89卷 / 05期
基金：
欧洲研究理事会;
关键词：
LIGHT; BEAM;
D O I：
10.1103/PhysRevA.89.053818
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Electron vortex beams have been predicted to enable atomic scale magnetic information measurement, via transfer of orbital angular momentum. Research so far has focused on developing production techniques and applications of these beams. However, methods to measure the outgoing orbital angular momentum distribution are also a crucial requirement towards this goal. Here, we use a method to obtain the orbital angular momentum decomposition of an electron beam, using a multipinhole interferometer. We demonstrate both its ability to accurately measure orbital angular momentum distribution, and its experimental limitations when used in a transmission electron microscope.
引用
收藏
页数：5
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