Propagation-based phase-contrast enhancement of nanostructure images using a debris-free femtosecond-laser-driven cluster-based plasma soft x-ray source and an LiF crystal detector
Propagation-based phase-contrast enhancement of nanostructure images using a debris-free femtosecond-laser-driven cluster-based plasma soft x-ray source and an LiF crystal detector
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DOI：
10.1364/ao.48.006271
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发表时间：
2009-11-10
期刊：
影响因子：
1.9
通讯作者：
Bulanov, Sergei V.
中科院分区：
文献类型：
--
作者：
Pikuz, Tatiana A.;Faenov, Anatoly Ya.;Bulanov, Sergei V.
我们演示了在线相衬成像的纳米厚度箔，通过使用一个相对较大的，多色的，无碎片的飞秒激光驱动的集群为基础的等离子体软X射线源，和一个高分辨率，大动态范围的LiF晶体探测器。在我们的设置中的辐射的空间相干长度达到了5 μ m的样品平面上的值，这是足够的观察相衬增强的图像中的检测器放置在物体后面只有几百微米。我们已经开发了一个桌面软x射线发射源，它发出的辐射在4 π sr立体角，并允许一个获得接触和传播为基础的相衬成像的纳米结构与700 nm的空间分辨率。这一进步可能是实用的计量应用。(C)2009年美国光学学会
We demonstrate in-line phase-contrast imaging of nanothickness foils by using a relatively large, polychromatic, debris-free femtosecond-laser-driven cluster-based plasma soft x-ray source, and a high-resolution, large dynamic range LiF crystal detector. The spatial coherence length of radiation in our setup reached a value of 5 mu m on the sample plane, which is enough to observe phase-contrast enhancement in the images registered by the detector placed only a few hundred micrometers behind the object. We have developed a tabletop soft x-ray emission source, which emits radiation within a 4 pi sr solid angle, and which allows one to obtain contact and propagation-based phase-contrast imaging of nanostructures with 700 nm spatial resolutions. This advance could be of utility for metrology applications. (C) 2009 Optical Society of America