### Coherence Properties of Individual Femtosecond Pulses of an X

```COHERENCE PROPERTIES OF INDIVIDUAL FEMTOSECOND
PULSES OF AN X-RAY FREE-ELECTRON LASER

I. A. Vartanyants,1,2,* A. Singer,1 A. P. Mancuso,1,† O. M.
Yefanov,1 A. Sakdinawat,3 Y. Liu,3 E. Bang,3 G. J. Williams,4G.
Cadenazzi,5 B. Abbey,5 H. Sinn,6 D. Attwood,3 K. A. Nugent,5 E.
Weckert,1 T. Wang,4 D. Zhu,4 B. Wu,4 C. Graves,4A. Scherz,4 J. J.
Turner,4 W. F. Schlotter,4 M. Messerschmidt,4 J. Lu¨ning,7 Y.
Acremann,8 P. Heimann,9 D. C. Mancini,10V. Joshi,10 J.
Krzywinski,4 R. Soufli,11 M. Fernandez-Perea,11 S. Hau-Riege,11
A. G. Peele,12 Y. Feng,4 O. Krupin,4,6S. Moeller,4 and W.
Wurth13

1.自由電子雷射介紹
2.簡介
3.儀器架設
4.實驗內容(實驗數據)
5.結論

↓

↓

LCLS

of coherence）來衡量

780 eV(λ
=1.6nm)
horizontal
5.7 ± 0.4 μ
m(FWHM)
vertical
17.3 ± 2.4 μ
m(FWHM)
Pinhole
separations
2~15 μ m
Kirkpatrick-Baez mirrors

0 <
<1
11 μ m
Temporal
coherence

78 ± 8%→TEM00 mode

1.橫向相干度= 56 %
2. 78% total power → TEM00 mode
3.時間相干性 = 0.55 fs





http://zh.wikipedia.org/wiki/%E7%9B%B8%E5%B9%B2%E6%8
0%A7
http://www.phys.ncku.edu.tw/optics/book_2/b2_11_2002_inc
omplete.pdf
http://en.wikipedia.org/wiki/Spectral_density#Crossspectral_density
http://www.nwsni.edu.cn/jcb/wulishiyanzhongxin/page/xiazai/
jiaochen/pdf/gzdsy.pdf
THE END
```