Spatial coherence properties of a compact and ultrafast laser-produced plasma keV x-ray source
Spatial coherence properties of a compact and ultrafast laser-produced plasma keV x-ray source
复制标题
DOI：
10.1063/1.2426941
复制
发表时间：
2007-01-01
影响因子：
4
通讯作者：
Clarke, R.
中科院分区：
文献类型：
--
作者：
Boschetto, D.;Mourou, G.;Clarke, R.
作者利用刀口菲涅耳衍射证明了由激光等离子体相互作用产生的桌面超快x射线源的空间相干性。在远场通过产生微米尺度的x射线光斑尺寸来实现空间相干性。结果表明，x射线源尺寸为6 μ m，在距离源60 cm处的横向相干长度为20 μ m。此外，他们还表明，光源的尺寸受到吸收激光能量的空间扩散的限制。
The authors use Fresnel diffraction from knife-edges to demonstrate the spatial coherence of a tabletop ultrafast x-ray source produced by laser-plasma interaction. Spatial coherence is achieved in the far field by producing micrometer-scale x-ray spot dimensions. The results show an x-ray source size of 6 mu m that leads to a transversal coherence length of 20 mu m at a distance of 60 cm from the source. Moreover, they show that the source size is limited by the spatial spread of the absorbed laser energy.