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arXiv · 1701.00910

Using a Bessel light beam as an ultra-short period helical undulator

Bocheng Jiang·Qinglei Zhang·Zhentang Zhao
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Abstract

The undulator is a critical component to produce synchrotron radiation and free electron laser. When a Bessel light beam carrying the orbit angular momentum co-propagates with an electron beam, a net transverse deflection force will be subjected to the electron beam. As a result of dephasing effect, the deflection force will oscillate acting as an undulator. For such a laser based undulator, the period length can reach sub-millimeter level, which will greatly reduce the electron energy for the required X-ray production.

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Bocheng Jiang, Qinglei Zhang, Zhentang Zhao. 2017-01-04. Using a Bessel light beam as an ultra-short period helical undulator. https://doi.org/10.1103/physrevaccelbeams.20.070701

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