High-purity free-electron momentum states prepared by three-dimensional optical phase modulation

2020/03/04 by Armin Feist, Sergey V. Yalunin, Sascha Schäfer +1
Biochemistry, Genetics and Molecular Biology · Physics and Astronomy · #Advanced Electron Microscopy Techniques and Applications #Beam (structure) #Electron #Laser-Matter Interactions and Applications #Modulation (music) #Momentum (technical analysis) #Orbital Angular Momentum in Optics #Phase (matter) #Phase modulation #Superposition principle #cond-mat.mes-hall #physics.ins-det #physics.optics #quant-ph

paper · pdf · doi:10.1103/physrevresearch.2.043227

published as Phys. Rev. Research 2, 043227 (2020)

arxiv created 2020/03/04 · openalex created_date 2020/03/13 · openalex publication_date 2020/11/12 · arxiv updated 2020/11/18 · openalex updated_date 2026/08/06

Abstract

This paper demonstrates a laser-based and femtosecond-switchable inelastic electron beam splitter. Coherent optical phase modulation of 200-keV electrons at a thin electron-transparent membrane is used to prepare a high-purity three-dimensional momentum superposition state, which is characterized in energy and momentum space.

Citations

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