Measuring the orbital angular momentum of electron vortex beams using a forked grating
Quantum Physics
2015-06-16 v1
Abstract
The present study experimentally examines how an electron vortex beam with orbital angular momentum (OAM) undergoes diffraction through a forked grating. The nth-order diffracted electron vortex beam after passing through a forked grating with a Burgers vector of 1 shows an OAM transfer of nh. Hence, the diffraction patterns become mirror asymmetric owing to the size difference between the electron beams. Such a forked grating, when used in combination with a pinhole located at the diffraction plane, could act as an analyzer to measure the OAM of input electrons.
Cite
@article{arxiv.1307.6304,
title = {Measuring the orbital angular momentum of electron vortex beams using a forked grating},
author = {Koh Saitoh and Yuya Hasegawa and Kazuma Hirakawa and Nobuo Tanaka and Masaya Uchida},
journal= {arXiv preprint arXiv:1307.6304},
year = {2015}
}
Comments
5 pages, 3 figures