| Paper | Title | Page |
|---|---|---|
TUBA01 |
High-quality electron beams and free-electron lasing based on laser wakefield accelerator | |
|
||
|
X-ray free-electron lasers can generate intense and coherent radiation at wavelengths down to the sub-ångström region, and have become indispensable tools for applications in structural biology and chemistry, among other disciplines. Laser wakefield accelerators can sustain accelerating gradients more than three orders of magnitude higher than those of radio-frequency accelerators, and are regarded as an attractive option for driving compact X-ray free-electron lasers[1]. After ten years of efforts, we present an experimental demonstration of undulator radiation amplification in the exponential-gain regime by using electron beams based on a laser wakefield accelerator[2-4]. The amplified undulator radiation, which is typically centred at 27 nanometres and has a maximum photon number of around 1010 per shot, yields a maximum radiation energy of about 150 nanojoules. The results constitute a proof-of-principle demonstration of free-electron lasing using a laser wakefield accelerator, and pave the way towards the development of compact X-ray free-electron lasers based on this technology with broad applications.
1. K. Nakajima, Nat. Phys. 4, 92-93 (2008). 2. Wentao Wang, et al., Nature 595, 516 (2021). 3. Wentao Wang, et al., PRL 117, 124801 (2016). 4. Lingtong Ke, et al., PRL 126, 214801 (2021). |
||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | |