Space-time control of free induction decay in the extreme ultraviolet
Space-time control of free induction decay in the extreme ultraviolet
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DOI：
10.1038/nphoton.2017.30
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发表时间：
2017-04-01
期刊：
影响因子：
35
通讯作者：
Mauritsson, J.
中科院分区：
文献类型：
--
作者：
Bengtsson, S.;Larsen, E. W.;Mauritsson, J.
超快极紫外（XUV）和x射线源正在彻底改变我们以埃级分辨率跟踪飞秒过程的能力。下一个前沿是同时控制这种辐射的方向、持续时间和时间。在这里，我们展示了一种功能齐全的XUV光光调制器，类似于红外（IR）和可见光波长的调制器。它的工作原理是使用红外脉冲来控制自由感应衰变的空间和光谱相位，这种衰变是使用阿秒脉冲激发气体产生的。调制器允许我们在我们选择的时间将XUV光发送到我们选择的方向。XUV发射与控制脉冲的内在同步将允许亚飞秒时间分辨率的激光泵浦/ x射线探针实验。
Ultrafast extreme-ultraviolet (XUV) and X-ray sources are revolutionizing our ability to follow femtosecond processes with angstrom-scale resolution. The next frontier is to simultaneously control the direction, duration and timing of such radiation. Here, we demonstrate a fully functional opto-optical modulator for XUV light, similar to modulators available at infrared (IR) and visible wavelengths. It works by using an IR pulse to control the spatial and spectral phase of the free induction decay that results from using attosecond pulses to excite a gas. The modulator allows us to send the XUV light in a direction of our choosing at a time of our choosing. The inherent synchronization of the XUV emission to the control pulse will allow laser-pump/X-ray probe experiments with sub-femtosecond time resolution.