Longitudinal and transverse modulation of electron wave function with light, and its application to electron microscopy
Time: Thu 2021-11-25 15.00 - 15.45
Location: FB52 and Zoom (link to zoom-meeting below the abstract)
Participating: Dr. Ivan Madan, Ecole Polytechnique Fédérale de Lausanne (EPFL), Switzerland
Abstract:
Conventional electron microscopy operates with flat electron wave fronts. Employing attenuative or electrostatic phase plates allows transversally modulating the wave front, enhancing cross-sections of particular scattering channels. Utilization of light from coherent ultrafast sources allows modulating electrons phase both transversally and longitudinally. This results in a plethora of phenomena, as well as conceptually new techniques such as non-local electron holography of light fields and generation of ultrafast electron vortex beams. In this talk I will present recent developments as well as current activities and perspectives in this domain.