2014/03/18 by L. Clark, Laura Clark, Armand Béché +5 · 1 citation
Engineering · Physics and Astronomy · #Digital Holography and Microscopy #Near-Field Optical Microscopy #Orbital Angular Momentum in Optics #physics.optics
paper · pdf · doi:10.1103/physreva.89.053818
published as Phys. Rev. A 89, 053818 (2014) · 6 pages, 5 figures
arxiv created 2014/03/18 · openalex publication_date 2014/05/13 · arxiv updated 2014/05/21 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
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.