
1.Key Laboratory for Laser Plasmas (MOE), Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China
2.Collaborative Innovation Center of IFSA (CICIFSA), Shanghai Jiao Tong University, Shanghai 200240, China
3.SUPA, Department of Physics, University of Strathclyde, Glasgow G4 0NG, UK
M Chen, Email: minchen@sjtu.edu.cn
ZM Sheng, Email: zhengming.sheng@strath.ac.uk
Published:2016-03,
Published Online:28 August 2015,
Received:06 April 2015,
Revised:21 August 2015,
Accepted:25 August 2015
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Chen, M. et al. Tunable synchrotron-like radiation from centimeter scale plasma channels. Light: Science & Applications, 5, e16015 (2016).
Chen, M. et al. Tunable synchrotron-like radiation from centimeter scale plasma channels. Light: Science & Applications, 5, e16015 (2016). DOI: 10.1038/lsa.2016.15.
Synchrotron radiation (SR) sources are immensely useful tools for scientific researches and many practical applications. Currently
the state-of-the-art synchrotrons rely on conventional accelerators
where electrons are accelerated in a straight line and radiate in bending magnets or other insertion devices. However
these facilities are usually large and costly. Here
we study a compact all optical synchrotron-like radiation source based on laser-plasma acceleration either in a straight or a curved plasma channel. With the laser pulse off-axially injected
its centroid oscillates transversely in the plasma channel. This results in a wiggler motion of the whole accelerating structure and the self-trapped electrons behind the laser pulse
leading to strong synchrotron-like radiations with tunable spectra. It is further shown that a palmtop ring-shaped synchrotron is possible with current high power laser technologies. With its potential of high flexibility and tunability
such light sources once realized would find applications in wide areas and make up the shortage of large SR facilities.
laser guidinglaser wakefield accelerationsynchrotron radiation
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