Echo-Enabled X-Ray Vortex Generation | Zendy

E. Hemsing | Zendy; Agostino Marinelli | Zendy

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Echo-Enabled X-Ray Vortex Generation

Author(s) -

E. Hemsing,

Agostino Marinelli

Publication year - 2012

Publication title -

physical review letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.688

H-Index - 673

eISSN - 1079-7114

pISSN - 0031-9007

DOI - 10.1103/physrevlett.109.224801

Subject(s) - physics , high harmonic generation , vortex , laser , echo (communications protocol) , electron , wavelength , optics , brightness , cathode ray , extreme ultraviolet , electromagnetic radiation , atomic physics , nuclear physics , computer network , computer science , thermodynamics

A technique to generate high-brightness electromagnetic vortices with tunable topological charge at extreme ultraviolet and x-ray wavelengths is described. Based on a modified version of echo-enabled harmonic generation for free-electron lasers, the technique uses two lasers and two chicanes to produce high-harmonic microbunching of a relativistic electron beam with a corkscrew distribution that matches the instantaneous helical phase structure of the x-ray vortex. The strongly correlated electron distribution emerges from an efficient three-dimensional recoherence effect in the echo-enabled harmonic generation transport line and can emit fully coherent vortices in a downstream radiator for access to new research in x-ray science.

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