Characterizing topological charge of optical vortex using non-uniformly distributed multi-pinhole plate

Shi, Lei; Tian, Linghao; Chen, Xianfeng

doi:10.3788/col201210.120501

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Phase and Intensity Retrieval Using A Multipinhole Inter1

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Cited by 12 publications

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“…As a general term, an MPI refers to any interferometer comprising a set of small holes [17][18][19]. However, here we consider a particular subset, in which the n pinholes are evenly spaced on a circle, as illustrated in Fig.…”

Section: Phase and Intensity Retrieval Using A Multipinhole Intermentioning

confidence: 99%

Quantitative measurement of orbital angular momentum in electron microscopy

et al. 2014

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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.

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Section: Phase and Intensity Retrieval Using A Multipinhole Intermentioning

confidence: 99%