期刊
PHYSICAL REVIEW X
卷 12, 期 3, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevX.12.031043
关键词
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资金
- European Research Council (ERC) under the European Union [758752]
- European Research Council (ERC) [758752] Funding Source: European Research Council (ERC)
This study demonstrates for the first time programmable transverse electron-beam shaping in free space based on ponderomotive potentials from short intense laser pulses. Both convex and concave electron lenses with a similar focal length to state-of-the-art electron microscopes can be realized, and almost arbitrary deflection patterns can be achieved by shaping the ponderomotive potentials using a spatial light modulator.
Interfacing electrons and light enables ultrafast electron microscopy and quantum control of electrons, as well as new optical elements for high-sensitivity imaging. Here, we demonstrate for the first time programmable transverse electron-beam shaping in free space based on ponderomotive potentials from short intense laser pulses. We can realize both convex and concave electron lenses with a focal length of a few millimeters, comparable to those in state-of-the-art electron microscopes. We further show that we can realize almost arbitrary deflection patterns by shaping the ponderomotive potentials using a spatial light modulator. Our modulator is lossless and programmable, has unity fill factor, and could pave the way to electron wave-front shaping with hundreds of individually addressable pixels.
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