Generating intense fully coherent soft x-ray radiation based on a laser-plasma accelerator

Laser-plasma based accelerator has the potential to dramatically reduce the size and cost of future x-ray light sources to the university-laboratory scale. However, the large energy spread of the laser-plasma accelerated electron beam may hinder the way for short wavelength free-electron laser gener...

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Bibliographic Details
Published in:Optics express 2015-06, Vol.23 (11), p.14993-15002
Main Authors: Feng, Chao, Xiang, Dao, Deng, Haixiao, Huang, Dazhang, Wang, Dong, Zhao, Zhentang
Format: Article
Language:English
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Summary:Laser-plasma based accelerator has the potential to dramatically reduce the size and cost of future x-ray light sources to the university-laboratory scale. However, the large energy spread of the laser-plasma accelerated electron beam may hinder the way for short wavelength free-electron laser generation. In this paper, we propose a novel method for directly imprinting strong coherent micro-bunching on the electron beam with large intrinsic energy spread by using a wavefront-tilted conventional optical laser beam and a weak dipole magnet. Theoretical analysis and numerical simulations demonstrate that this technique can be used for the generation of fully coherent femtosecond soft x-ray radiation at gigawatts level with a very short undulator.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.23.014993