Dataset on low OAM EVBs generated with a chopstic

Dataset of off-axis electron holography images used to recontruct the phase of the electron beam after interaction with a "chopstic" device (2 needles biased at opposite potensials that are able to generate and electron vortex beam). Here we varied the potential difference between the two opposedly biased needles to generate electron vortex beams with different orbital angular momentum. The OAM of these beams has been varied from 0 to 3h-bar, and some of the generated beams have fractional OAM.