Experimental Demonstration of Femtosecond Two-Color X-Ray Free-Electron Lasers
Experimental Demonstration of Femtosecond Two-Color X-Ray Free-Electron Lasers
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DOI：
10.1103/physrevlett.110.134801
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发表时间：
2013-03-25
影响因子：
8.6
通讯作者：
Nuhn, H. -D.
中科院分区：
文献类型：
--
作者：
Lutman, A. A.;Coffee, R.;Nuhn, H. -D.
着眼于将光波混合技术扩展到 X 射线领域，我们在直线加速器相干光源上首次展示了双色 X 射线自由电子激光器。我们将发射度扰流器技术与波荡器部分的磁减速道相结合，以控制脉冲持续时间和两个强 X 射线脉冲之间的相对延迟，并且我们使用不同调谐的斜极波荡器，以便两个脉冲也具有不同的波长。两种方案可产生双色软 X 射线脉冲，波长间隔高达 1.9%，可控相对延迟高达 40 fs。 DOI：10.1103/PhysRevLett.110.134801
With an eye toward extending optical wave-mixing techniques to the x-ray regime, we present the first experimental demonstration of a two-color x-ray free-electron laser at the Linac Coherent Light Source. We combine the emittance-spoiler technique with a magnetic chicane in the undulator section to control the pulse duration and relative delay between two intense x-ray pulses and we use differently tuned canted pole undulators such that the two pulses have different wavelengths as well. Two schemes are shown to produce two-color soft x-ray pulses with a wavelength separation up to similar to 1.9% and a controllable relative delay up to 40 fs. DOI: 10.1103/PhysRevLett.110.134801