Measuring the orbital angular momentum of electron vortex beams using a forked grating

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.

5 pages, 3 figures

References in corpus (3)

• Quantised orbital angular momentum transfer and magnetic dichroism in the interaction of electron vortices with matter
• A new way of producing electron vortex probes for STEM
• Transformation of Optical Vortex Beams by Holograms with Embedded Phase Singularity

Cited by in corpus (22)

• Theory and applications of free-electron vortex states
• Sculpturing the Electron Wave Function
• Relativistic electron wave packets carrying angular momentum
• Experimental demonstration of an electrostatic orbital angular momentum sorter for electrons
• Scattering of electron vortex beams on a magnetic crystal: towards atomic resolution magnetic measurements
• Inelastic electron-vortex-beam scattering
• Measuring the Orbital Angular Momentum of Electron Beams
• Unveiling the orbital angular momentum and acceleration of electron beams
• Efficient orbital angular momentum transfer between plasmons and free electrons
• Entanglement of Orbital Angular Momentum in Non-Sequential Double Ionization
• Radiative Capture of Twisted Electrons by Bare Ions
• Anisotropic diffraction induced by orbital angular momentum during propagations of optical beams
• Quantitative measurement of orbital angular momentum in electron microscopy
• Manipulating Twisted Electrons in Strong-Field Ionization
• Nondestructive Measurement of Orbital Angular Momentum for an Electron Beam
• Simulating topological materials with photonic synthetic dimensions in cavities
• A Stern-Gerlach-like approach to electron orbital angular momentum measurement
• 3D shaping of electron beams using amplitude masks
• Experimental Realisation of a π/2 Vortex Mode Converter for Electrons Using a Spherical Aberration Corrector
• Soft X-ray Vortex Beam detected by In-line Holography
• Automatic alignment of an orbital angular momentum sorter in a transmission electron microscope using a convolution neural network
• Measuring an electron beam's orbital angular momentum spectrum