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A free-electron laboratory coherent X-ray source


Facilities generating coherent X-rays tend to be large scale and costly. Now researchers have demonstrated a parametric and coherent laboratory-scale X-ray source by passing moderately energetic electrons through van der Waals heterostructures.

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Fig. 1: Scaling of the electron velocity, velectron, and the relativistic parameter, γ, for different X-ray sources.


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Correspondence to Ingo Uschmann.

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Uschmann, I. A free-electron laboratory coherent X-ray source. Nat. Photonics 14, 655–656 (2020).

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