Hanbury Brown-Twiss Interferometry at a Free-Electron Laser

被引：45

作者：

Singer, A. ^{[1
]}

Lorenz, U. ^{[1
]}

Sorgenfrei, F. ^{[2
,3
]}

Gerasimova, N. ^{[1
]}

Gulden, J. ^{[1
]}

Yefanov, O. M. ^{[1
]}

Kurta, R. P. ^{[1
]}

Shabalin, A. ^{[1
]}

Dronyak, R. ^{[1
]}

Treusch, R. ^{[1
]}

Kocharyan, V. ^{[1
]}

Weckert, E. ^{[1
]}

Wurth, W. ^{[2
,3
]}

Vartanyants, I. A. ^{[1
,4
]}

机构：

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

[2] Univ Hamburg, Inst Expt Phys, D-22603 Hamburg, Germany

[3] Univ Hamburg, CFEL, D-22603 Hamburg, Germany

[4] Natl Res Nucl Univ, MEPhI, Moscow 115409, Russia

来源：

PHYSICAL REVIEW LETTERS | 2013年 / 111卷 / 03期

关键词：

EXTREME-ULTRAVIOLET; INTENSITY INTERFEROMETRY; COHERENCE PROPERTIES; TEMPORAL COHERENCE; PULSES; PHOTONS; INTERFERENCE; RADIATION; OPERATION; RAYS;

D O I：

10.1103/PhysRevLett.111.034802

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present measurements of second- and higher-order intensity correlation functions (so-called Hanbury Brown-Twiss experiment) performed at the free-electron laser (FEL) FLASH in the non-linear regime of its operation. We demonstrate the high transverse coherence properties of the FEL beam with a degree of transverse coherence of about 80% and degeneracy parameter of the order 10(9) that makes it similar to laser sources. Intensity correlation measurements in spatial and frequency domain gave an estimate of the FEL average pulse duration of 50 fs. Our measurements of the higher-order correlation functions indicate that FEL radiation obeys Gaussian statistics, which is characteristic to chaotic sources.

引用

页数：5

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