publication . Article . Preprint . 2015

Local orbital angular momentum revealed by spiral-phase-plate imaging in transmission-electron microscopy

Juchtmans, Roeland; Verbeeck, Jo;
Open Access English
  • Published: 15 Dec 2015 Journal: PHYSICAL REVIEW A (issn: 2469-9926, Copyright policy)
  • Country: Belgium
Abstract
The orbital angular momentum (OAM) of light and matter waves is a parameter that is getting increasingly more attention over the past couple of years. Beams with a well defined OAM, the so-called vortex beams, are applied already in e.g. telecommunication, astrophysics, nanomanipulation and chiral measurements in optics and electron microscopy. Also the OAM of a wave induced by the interaction with a sample, shows great potential of interest. In all these experiments it is crucial to measure the exact (local) OAM content of the wave, whether it is an incoming vortex beam or an exit wave after interacting with a sample. In this work we investigate the use of spir...
Subjects
arXiv: Physics::OpticsPhysics::Space Physics
free text keywords: Physics, Free electron model, Magnetic monopole, Magnetic dipole, Beam (structure), Optics, business.industry, business, Orbital angular momentum of light, Angular momentum, Wave function, Matter wave, Physics - Optics
Related Organizations
Funded by
EC| ESTEEM 2
Project
ESTEEM 2
Enabling Science and Technology through European Electron Microscopy
  • Funder: European Commission (EC)
  • Project Code: 312483
  • Funding stream: FP7 | SP4 | INFRA
,
EC| VORTEX
Project
VORTEX
Exploring electron vortex beams
  • Funder: European Commission (EC)
  • Project Code: 278510
  • Funding stream: FP7 | SP2 | ERC
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publication . Article . Preprint . 2015

Local orbital angular momentum revealed by spiral-phase-plate imaging in transmission-electron microscopy

Juchtmans, Roeland; Verbeeck, Jo;