A compact synchrotron radiation source driven by a laser-plasma wakefield accelerator
A compact synchrotron radiation source driven by a laser-plasma wakefield accelerator
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DOI：
10.1038/nphys811
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发表时间：
2008-02-01
期刊：
影响因子：
19.6
通讯作者：
Jaroszynski, D. A.
中科院分区：
文献类型：
--
作者：
Schlenvoigt, H. -P.;Haupt, K.;Jaroszynski, D. A.
超短光脉冲是分子和原子动力学时间分辨研究的有力工具(1)。它们产生于飞秒激光(2)的可见光和红外范围内，以及波长较短的紫外线和X射线范围内，来自同步加速器源和自由电子激光(3)。激光尾波场加速器的最新进展已经产生了能量从几十兆电子伏特(参考文献5-7)到在几厘米(4)内超过1GeV的电子束，脉冲持续时间预计为几飞秒(9)。在提高光束质量和稳定性方面的巨大进步(5-8，10)使它们成为驱动下一代超小型光源的重要候选者(11)。在这里，我们展示了第一个成功的激光-等离子体尾波场加速器的组合，产生55-75 MeV的电子束，和一个波动器来产生可见的同步辐射。通过演示波长随能量的比例和窄带宽光谱，我们展示了从红外能量到X射线能量的超小型和多功能激光辐射源的潜力。
Ultrashort light pulses are powerful tools for time-resolved studies of molecular and atomic dynamics(1). They arise in the visible and infrared range from femtosecond lasers(2), and at shorter wavelengths, in the ultraviolet and X-ray range, from synchrotron sources' and free-electron lasers(3). Recent progress in laser wakefield accelerators has resulted in electron beams with energies from tens of mega-electron volts (refs 5-7) to more than 1 GeV within a few centimetres(4), with pulse durations predicted to be several femtoseconds(9). The enormous progress in improving beam quality and stability(5-8,10) makes them serious candidates for driving the next generation of ultracompact light sources(11). Here, we demonstrate the first successful combination of a laser-plasma wakefield accelerator, producing 55-75 MeV electron bunches, with an undulator to generate visible synchrotron radiation. By demonstrating the wavelength scaling with energy, and narrow-bandwidth spectra, we show the potential for ultracompact and versatile laser-based radiation sources from the infrared to X-ray energies.