Helical electron-beam microbunching by harmonic coupling in a helical undulator

E. Hemsing; P. Musumeci; S. Reiche; R. Tikhoplav; A. Marinelli; J. B. Rosenzweig; A. Gover

doi:10.1103/PhysRevLett.102.174801

Helical electron-beam microbunching by harmonic coupling in a helical undulator

E. Hemsing^*, P. Musumeci, S. Reiche, R. Tikhoplav, A. Marinelli, J. B. Rosenzweig, A. Gover

^*Corresponding author for this work

School of Electrical Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

Microbunching of a relativistic electron beam into a helix is examined analytically and in simulation. Helical microbunching is shown to occur naturally when an e beam interacts resonantly at the harmonics of the combined field of a helical magnetic undulator and an axisymmetric input laser beam. This type of interaction is proposed as a method to generate a strongly prebunched e beam for coherent emission of light with orbital angular momentum at virtually any wavelength. The results from the linear microbunching theory show excellent agreement with three-dimensional numerical simulations.

Original language	English
Article number	174801
Journal	Physical Review Letters
Volume	102
Issue number	17
DOIs	https://doi.org/10.1103/PhysRevLett.102.174801
State	Published - 29 Apr 2009

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10.1103/PhysRevLett.102.174801

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abstract = "Microbunching of a relativistic electron beam into a helix is examined analytically and in simulation. Helical microbunching is shown to occur naturally when an e beam interacts resonantly at the harmonics of the combined field of a helical magnetic undulator and an axisymmetric input laser beam. This type of interaction is proposed as a method to generate a strongly prebunched e beam for coherent emission of light with orbital angular momentum at virtually any wavelength. The results from the linear microbunching theory show excellent agreement with three-dimensional numerical simulations.",

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AU - Hemsing, E.

AU - Musumeci, P.

AU - Reiche, S.

AU - Tikhoplav, R.

AU - Marinelli, A.

AU - Rosenzweig, J. B.

AU - Gover, A.

PY - 2009/4/29

Y1 - 2009/4/29

N2 - Microbunching of a relativistic electron beam into a helix is examined analytically and in simulation. Helical microbunching is shown to occur naturally when an e beam interacts resonantly at the harmonics of the combined field of a helical magnetic undulator and an axisymmetric input laser beam. This type of interaction is proposed as a method to generate a strongly prebunched e beam for coherent emission of light with orbital angular momentum at virtually any wavelength. The results from the linear microbunching theory show excellent agreement with three-dimensional numerical simulations.

AB - Microbunching of a relativistic electron beam into a helix is examined analytically and in simulation. Helical microbunching is shown to occur naturally when an e beam interacts resonantly at the harmonics of the combined field of a helical magnetic undulator and an axisymmetric input laser beam. This type of interaction is proposed as a method to generate a strongly prebunched e beam for coherent emission of light with orbital angular momentum at virtually any wavelength. The results from the linear microbunching theory show excellent agreement with three-dimensional numerical simulations.

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Helical electron-beam microbunching by harmonic coupling in a helical undulator

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