Aberration-free short focal length x-ray lenses.
Aberration-free short focal length x-ray lenses.
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DOI：
10.1364/ol.40.005586
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发表时间：
2015-12
期刊：
影响因子：
3.6
通讯作者：
L. Alianelli;M. D. del Río;O. Fox;K. Korwin-Mikke
中科院分区：
文献类型：
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作者：
L. Alianelli;M. D. del Río;O. Fox;K. Korwin-Mikke
我们处理的问题，定义理想的x射线折射透镜设计的点聚焦低发射度的x射线光束在第三和第四代同步辐射光源。这个任务是通过使用费马原理来定义一个完全没有几何像差的透镜形状来完成的。目前的微细加工分辨率限制，并提出了一种设计，容忍固有的制造缺陷。折射透镜设计提供纳米尺寸的聚焦X射线束，并与当前的微加工技术兼容。
We treat the problem of defining the ideal x-ray refractive lens design for point focusing of low emittance x-ray beams at third- and fourth-generation synchrotron sources. The task is accomplished by using Fermat's principle to define a lens shape that is completely free from geometrical aberrations. Current microfabrication resolution limits are identified, and a design that tolerates the inherent fabrication imperfections is proposed. The refractive lens design delivers nanometer-sized focused x-ray beams and is compatible with current microfabrication techniques.