Single-shot pulse duration monitor for extreme ultraviolet and X-ray free-electron lasers

被引：83

作者：

Riedel, R. ^{[1
,2
]}

Al-Shemmary, A. ^{[3
]}

Gensch, M. ^{[4
]}

Golz, T. ^{[3
]}

Harmand, M. ^{[3
]}

Medvedev, N. ^{[5
]}

Prandolini, M. J. ^{[2
]}

Sokolowski-Tinten, K. ^{[6
,7
]}

Toleikis, S. ^{[3
]}

Wegner, U. ^{[3
]}

Ziaja, B. ^{[5
,8
]}

Stojanovic, N. ^{[3
]}

Tavella, F. ^{[2
]}

机构：

[1] Univ Hamburg, D-22761 Hamburg, Germany

[2] Helmholtz Inst Jena, D-07743 Jena, Germany

[3] Deutsch Elekt Synchrotron DESY, D-22607 Hamburg, Germany

[4] Helmholtz Zent Dresden Rossendorf, D-01328 Dresden, Germany

[5] Ctr Free Elect Laser Sci DESY, D-22607 Hamburg, Germany

[6] Univ Duisburg Essen, Fac Phys, D-47048 Duisburg, Germany

[7] Univ Duisburg Essen, Ctr Nanointegrat Duisburg Essen CENIDE, D-47048 Duisburg, Germany

[8] Inst Nucl Phys, PAN, PL-31342 Krakow, Poland

来源：

NATURE COMMUNICATIONS | 2013年 / 4卷

关键词：

SCATTERING; OPERATION; DYNAMICS;

D O I：

10.1038/ncomms2754

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The resolution of ultrafast studies performed at extreme ultraviolet and X-ray free-electron lasers is still limited by shot-to-shot variations of the temporal pulse characteristics. Here we show a versatile single-shot temporal diagnostic tool that allows the determination of the extreme ultraviolet pulse duration and the relative arrival time with respect to an external pump-probe laser pulse. This method is based on time-resolved optical probing of the transient reflectivity change due to linear absorption of the extreme ultraviolet pulse within a solid material. In this work, we present measurements performed at the FLASH free-electron laser. We determine the pulse duration at two distinct wavelengths, yielding (184 +/- 14) fs at 41.5nm and (21 +/- 19) fs at 5.5 nm. Furthermore, we demonstrate the feasibility to operate the tool as an online diagnostic by using a 20-nm-thin Si3N4 membrane as target. Our results are supported by detailed numerical and analytical investigations.

引用

页数：7

共 52 条

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