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Research on probing the transverse coherence of the self-amplified spontaneous emission of a free-electron laser using near-field heterodyne speckle
- NUCLEAR TECHNIQUES Vol. 41, Issue 10, Article number: 100101(2018)
- 作者机构：
1.中国科学院上海应用物理研究所 嘉定园区 上海 201800
2.中国科学院大学 北京 100049
- 作者简介：
- 基金信息：
DOI：10.11889/j.0253-3219.2018.hjs.41.100101
CLC： TN248.6Received：19 March 2018，
Revised：04 May 2018，
Published：10 October 2018
- 稿件说明：
移动端阅览
Chao YAO, Jianhui CHEN, Dong WANG, et al. Research on probing the transverse coherence of the self-amplified spontaneous emission of a free-electron laser using near-field heterodyne speckle[J]. Nuclear techniques, 2018, 41(10): 100101
Chao YAO, Jianhui CHEN, Dong WANG, et al. Research on probing the transverse coherence of the self-amplified spontaneous emission of a free-electron laser using near-field heterodyne speckle[J]. Nuclear techniques, 2018, 41(10): 100101 DOI： 10.11889/j.0253-3219.2018.hjs.41.100101.
摘要
相干性是X射线自由电子激光（X-ray Free-Electron Laser，XFEL）最重要和显著的特点之一，在自放大自发辐射（Self-Amplified Spontaneous Emission，SASE）模式下，XFEL光输出功率极不稳定且强度分布差异较大。为能够用简单系统同时测量二维平面的横向相干性，本文提出一种基于近场外差散斑的光脉冲相干性测量方案，该方案的优点是能实现单发脉冲和平均脉冲的横向相干性测量。将光脉冲照射在做布朗运动的纳米粒子溶液上产生近场外差散斑，通过散斑信号的功率谱分析得到光脉冲的横向相干性。文章重点在理论上研究了测量方案的可行性，结合上海软X射线自由电子激光SASE模式的光场仿真，通过数值模拟的方法获得了单粒子和多粒子外差散斑信号的空间分布，以及对应的横向相干性。未来此方法可以为自由电子激光的运行和用户提供在线的相干性信息。
Abstract
Background
2
Coherence is the most striking and fundamental property of the light waves produced by X-ray free-electron lasers (XFEL). The implementation of many experimental techniques exploiting coherent radiation from XFEL requires accurate characterization of spatial properties of the radiation at the sample positon.
Purpose
2
This paper aims to investigate the two-dimensional transverse coherence of the self-amplified spontaneous emission (SASE) of a free-electron laser radiation based on near-field heterodyne speckle.
Methods
2
The laser pulse is irradiated on the nanoparticle solution making Brownian movement to produce near-field heterodyne speckle. Use a splitter to split each single pulse into two equal-amplitude pulses and two statistically independent raw images are obtained simultaneously for accurate extraction of the heterodyne speckle intensity distribution. The square root of the two-dimensional power spatial frequency spectrum of the heterodyne speckle yields the modulus of the complex coherence factor.
Results
2
Theoretical and simulation results proved that the accurate extraction of heterodyne signal and availability of a full two-dimensional coherence map are possible.
Conclusion
2
The above-mentioned method has the capability to probe the real-time coherence property of XFEL photon pulses produced from SASE mode.
关键词
Keywords
references
F Lehmkühler , P Kwaśniewski , W Roseker , . Sequential single shot X-ray photon correlation spectroscopy at the SACLA free electron laser . Scientific Reports , 2015 . 5 17193 DOI: 10.1038/srep17193 http://doi.org/10.1038/srep17193 .
T Hoshino , M Kikuchi , D Murakami . X-ray photon correlation spectroscopy using a fast pixel array detector with a grid mask resolution enhancer . Journal of Synchrotron Radiation , 2012 . 19 ( 6 ): 988 - 993 . DOI: 10.1107/S0909049512038769 http://doi.org/10.1107/S0909049512038769 .
M Sutton , S G J Mochrie , T Greytak , . Observation of speckle by diffraction with coherent X-rays . Nature , 1991 . 352 ( 6336 ): 608 - 610 . DOI: 10.1038/352608a0 http://doi.org/10.1038/352608a0 .
S Marchesini , H N Champman , S P Hau-Riege . Coherent X-ray diffractive imaging:applications and limitations . Optics Express , 2003 . 11 ( 19 ): 2344 - 2353 . DOI: 10.1364/OE.11.002344 http://doi.org/10.1364/OE.11.002344 .
S Zabler , P Cloetens , M Guigay . Optimization of phase contrast imaging using hard X-rays . Review of Scientific Instruments , 2005 . 76 ( 7 ): 073705 DOI: 10.1063/1.1960797 http://doi.org/10.1063/1.1960797 .
M Siano , B Paroli , M A C Potenza , . Characterizing temporal coherence of visible synchrotron radiation with heterodyne near field speckles . Physical Review Accelerators and Beams , 2017 . 20 110702 DOI: 10.1103/PhyRevAccelBeams.20.110702 http://doi.org/10.1103/PhyRevAccelBeams.20.110702 .
E Wolf . Introduction to the theory of coherence and polarization of light , : England Cambridge University Press, Cambridge , 2007 .
E J Jaeschke , S Khan , J R Schneider , . Hastings. synchrotron light sources and free-electron lasers , : Switzerland Springer International Publishing AG Switzerland , 2016 .
I A Vartanyants , A Singer , A P Mancuso . Coherence properties of individual femtosecond pulses of an X-ray free-electron laser . Physical Review Letters , 2011 . 107 ( 14 ): 144801 DOI: 10.1103/PhysRevLett.107.144801 http://doi.org/10.1103/PhysRevLett.107.144801 .
F Pfeiffer , O Bunk , C Schulze-Briese . Shearing interferometer for quantifying the coherence of hard X-ray beams . Physical Review Letters , 2005 . 94 ( 16 ): 164801 DOI: 10.1103/PhysRevLett.94.164801 http://doi.org/10.1103/PhysRevLett.94.164801 .
Sanghoon S, Zhu D, Singer A, et al . Intensity interferometry measurements with hard X-ray FEL pulses at the linac coherent light source[C]. Proceedings of the 2014 the International Society for Optical and Photonics, San Diego, 2014. http://www.mendeley.com/research/intensity-interferometry-measurements-hard-xray-fel-pulses-linac-coherent-light-source/
O Y Gorobtsov . Statistical properties of a free-electron laser revealed by Hanbury Brown-Twiss interferometry . Physical Review A , 2017 . 95 ( 2 ): 023843 DOI: 10.1103/PhysRevA.95.023843 http://doi.org/10.1103/PhysRevA.95.023843 .
M D Alaimo , M A C Potenza , M Manfredda . Probing the transverse coherence of an undulator X-ray beam using brownian particles . Physical Review Letters , 2009 . 103 ( 19 ): 194805 DOI: 10.1103/PhysRevLett.103.194805 http://doi.org/10.1103/PhysRevLett.103.194805 .
M D Alaimo , M P Anania , M Artioli , . Mapping the transverse coherence of the self-amplified spontaneous emission of a free-electron laser with the heterodyne speckle method . Optics Express , 2014 . 22 ( 24 ): 30013 - 30023 . DOI: 10.1364/OE.22.030013 http://doi.org/10.1364/OE.22.030013 .
R Cerbino , L Peverini , M A C Potenza . X-ray-scattering information obtained from near field speckle . Nature Physics , 2008 . 4 ( 3 ): 238 DOI: 10.1038/nphys837 http://doi.org/10.1038/nphys837 .
L Mandel , E Wolf . Optical coherence and quantum optics , : Cambridge Cambridge University Press , 1995 . 160 .
H C van de Hulst . Light scattering by small particles , : New York John Wiley and Sons , 1957 . 1 - 140 .
Y Kashyap , H C Wang , K Sawhney . Two-dimensional transverse coherence measurement of hard-X-ray beams using near-field speckle . Physical Review A , 2015 . 92 ( 3 ): 033842 DOI: 10.1103/PhysRevA.92.033842 http://doi.org/10.1103/PhysRevA.92.033842 .
M Siano , B Paroli , E Chiadroni . Measurement of power spectral density of broad-spectrum visible light with heterodyne near field scattering and its scalability to betatron radiation . Optics Express , 2015 . 23 ( 26 ): 32888 - 32896 . DOI: 10.1364/OE.23.032888 http://doi.org/10.1364/OE.23.032888 .
Manfredda M. Probing transverse coherence with the heterodyne speckle approach: overview and perspectives[C]. 2015 3rd International Conference Frontiers in Diagnostic Technologies ICFDT3, Italy, 2015: 59-64. http://www.sciencedirect.com/science/article/pii/s1875389215000425
D Magatti , M D Alaimo , M A C Potenza . Dynamic heterodyne near field scattering . Applied Physics Letters , 2008 . 92 ( 24 ): 241101 DOI: 10.1063/1.2937841 http://doi.org/10.1063/1.2937841 .
F Ferri , D Magatti , D Pescini . Heterodyne near-field scattering:a technique for complex fluids . Physical Review E , 2004 . 70 ( 4 ): 041405 DOI: 10.1103/PhysRevE.70.041405 http://doi.org/10.1103/PhysRevE.70.041405 .
Z Zhao , D Wang , Q Gu . SXFEL:a soft X-ray free electron laser in China . Synchrotron Radiation News , 2017 . 30 ( 6 ): 29 - 33 . DOI: 10.1080/08940886.2017.1386997 http://doi.org/10.1080/08940886.2017.1386997 .
E L Saldin , E A Schneidmiller , M V Yurkov . Statistical and coherence properties of radiation from X-ray free-electron lasers . New Journal of Physics , 2010 . 12 ( 3 ): 035010 DOI: 10.1088/1367-2630/12/3/035010 http://doi.org/10.1088/1367-2630/12/3/035010 .
G Geloni , E Saldin , L Samoylova . Coherence properties of the European XFEL . New Journal of Physics , 2010 . 12 ( 3 ): 035021 DOI: 10.1088/1367-2630/12/3/035021 http://doi.org/10.1088/1367-2630/12/3/035021 .
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