Soft-X-Ray Vortex Beam Detected by Inline Holography
Soft-X-Ray Vortex Beam Detected by Inline Holography
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DOI：
10.1103/physrevapplied.14.064069
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发表时间：
2020-12-24
影响因子：
4.6
通讯作者：
Yamasaki, Yuichi
中科院分区：
文献类型：
--
作者：
Ishii, Yuta;Yamamoto, Kohei;Yamasaki, Yuichi
我们演示了具有轨道角动量的软X射线涡旋光束的同轴全息术。全息图记录为来自叉形光栅的布拉格衍射波和由菲涅耳波带片产生的发散波之间的干涉图案。所获得的图像表现出叉形干涉条纹，这证实了涡旋光束的形成。通过对干涉图像的分析，我们成功地获得了拓扑荷l =+1的螺旋相位分布。结果表明，同轴全息技术是表征磁织构中拓扑缺陷的一种有效手段。
We demonstrate inline holography with a soft-x-ray vortex beam having an orbital angular momentum. A hologram is recorded as an interference pattern between a Bragg-diffracted wave from a fork grating and a divergent wave generated by a Fresnel zone plate. The images obtained exhibit fork-shaped interference fringes, which confirm the formation of a vortex beam. By analyzing the interference images, we successfully obtain a spiral phase distribution with a topological charge l = +1. The results demonstrate that the inline-holography technique may be an effective probe for the characterization of topological defects in magnetic textures.