Single-Shot Diffractive Imaging with a Table-Top Femtosecond Soft X-Ray Laser-Harmonics Source
Single-Shot Diffractive Imaging with a Table-Top Femtosecond Soft X-Ray Laser-Harmonics Source
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DOI：
10.1103/physrevlett.103.028104
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发表时间：
2009-07-10
影响因子：
8.6
通讯作者：
Merdji, H.
中科院分区：
文献类型：
--
作者：
Ravasio, A.;Gauthier, D.;Merdji, H.
相干x射线衍射成像是研究纳米尺度非周期结构的有力手段。在主要的物理、化学和生物过程中获得飞秒动力学需要单次衍射数据。到目前为止，这仅限于自由电子激光器产生的强相干脉冲。在这里，我们表明，激光驱动的超短x射线源提供了一个相对便宜的替代品。我们目前的测量单次拍摄的衍射图案从孤立的纳米物体与一个单一的20 fs脉冲从桌面高谐波X射线激光。图像重建的分辨率为119 nm的单次拍摄和62 nm的多次拍摄。
Coherent x-ray diffractive imaging is a powerful method for studies on nonperiodic structures on the nanoscale. Access to femtosecond dynamics in major physical, chemical, and biological processes requires single-shot diffraction data. Up to now, this has been limited to intense coherent pulses from a free electron laser. Here we show that laser-driven ultrashort x-ray sources offer a comparatively inexpensive alternative. We present measurements of single-shot diffraction patterns from isolated nano-objects with a single 20 fs pulse from a table-top high-harmonic x-ray laser. Images were reconstructed with a resolution of 119 nm from the single shot and 62 nm from multiple shots.