Unveiling the Orbital Angular Momentum and Acceleration of Electron Beams
Abstract
New forms of electron beams have been intensively investigated recently, including vortex beams carrying orbital angular momentum, as well as Airy beams propagating along a parabolic trajectory. Their traits may be harnessed for applications in materials science, electron microscopy, and interferometry, and so it is important to measure their properties with ease. Here, we show how one may immediately quantify these beams' parameters without need for additional fabrication or nonstandard microscopic tools. Our experimental results are backed by numerical simulations and analytic derivation.
- Publication:
-
Physical Review Letters
- Pub Date:
- March 2015
- DOI:
- 10.1103/PhysRevLett.114.096102
- arXiv:
- arXiv:1402.3133
- Bibcode:
- 2015PhRvL.114i6102S
- Keywords:
-
- 68.37.Lp;
- 41.85.-p;
- 42.40.Jv;
- Transmission electron microscopy;
- Beam optics;
- Computer-generated holograms;
- Physics - Accelerator Physics
- E-Print:
- 2 figures in text, 2 in supplementary