Soft x-ray femtosecond coherent undulator radiation in a storage ring

被引：21
|
作者：
Evain, C. [1 ]
Loulergue, A. [1 ]
Nadji, A. [1 ]
Filhol, J. M. [1 ]
Couprie, M. E. [1 ]
Zholents, A. A. [2 ]
机构：
[1] Synchrotron SOLEIL, F-91192 Gif Sur Yvette, France
[2] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA
来源：
NEW JOURNAL OF PHYSICS | 2012年 / 14卷
关键词：
FREE-ELECTRON LASER; HARMONIC-GENERATION; SYNCHROTRON-RADIATION; PULSES; OPERATION; DYNAMICS; BOND;
D O I：
10.1088/1367-2630/14/2/023003
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We propose to produce femtosecond pulses of soft x-ray coherent undulator radiation in a storage ring for user pump-probe experiments using two energy exchanges between a picosecond relativistic electron bunch and two external ultra-short laser pulses. The coherent emission is generated thanks to the two laser-electron interactions that modulate the longitudinal charge distribution of the electron bunch at a harmonic of the laser wavelength, such as in the echo-enabled harmonic generation in free-electron lasers. Application to the SOLEIL storage ring in the soft x-ray range leads to coherent radiation and improvement of the flux of the photons by several orders in magnitude compared to the conventional slicing scheme. This is also accompanied by a significant enhancement of the signal-to-noise ratio.
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页数：9
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