Sequential femtosecond X-ray imaging

被引：11

作者：

Guenther, C. M. ^{[1
,2
]}

Pfau, B. ^{[1
,2
]}

Mitzner, R. ^{[2
,3
]}

Siemer, B. ^{[3
]}

Roling, S. ^{[3
]}

Zacharias, H. ^{[3
]}

Kutz, O. ^{[2
]}

Rudolph, I. ^{[2
]}

Schondelmaier, D. ^{[2
]}

Treusch, R. ^{[4
]}

Eisebitt, S. ^{[1
,2
]}

机构：

[1] Tech Univ Berlin, Inst Opt & Atomare Phys, D-10623 Berlin, Germany

[2] Helmholtz Zentrum Berlin Mat & Energie GmbH, D-14109 Berlin, Germany

[3] Univ Munster, Inst Phys, D-48149 Munster, Germany

[4] DESY, HASYLAB, D-22607 Hamburg, Germany

来源：

NATURE PHOTONICS | 2011年 / 5卷 / 02期

关键词：

FREE-ELECTRON LASER; MOLECULAR MOVIE; HOLOGRAPHY; DIFFRACTION;

D O I：

10.1038/NPHOTON.2010.287

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Recording a 'molecular movie' with atomic spatial resolution on the femtosecond timescale set by atomic motion can be considered the ultimate goal of dynamic real-space imaging. Free-electron X-ray lasers, with their (sub)nanometre wavelength, femtosecond pulse duration and high brilliance, fuel the hope that this may ultimately become possible. Single-shot still pictures with sub-100 nm resolution achieved during femtosecond exposures have recently been demonstrated(1-3). A femtosecond time-lapse movie requires a sequence of independent images taken with a controllable time delay. As a key step towards achieving a molecular movie, we demonstrate a holographic imaging approach capable of recording two fully independent images with a variable time delay over the entire femtosecond regime. The concept overcomes the fundamental readout time limitations of two-dimensional area detectors, as two subsequent X-ray holograms of a sample can be superimposed within one detector exposure and yet be unambiguously disentangled to reconstruct two independent images.

引用

页码：99 / 102

页数：4

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