Soft-X-Ray Vortex Beam Detected by Inline Holography

Yuta Ishii, Kohei Yamamoto, Yuichi Yokoyama, Masaichiro Mizumaki, Hironori Nakao, Taka Hisa Arima, Yuichi Yamasaki

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


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 =±1. The results demonstrate that the inline-holography technique may be an effective probe for the characterization of topological defects in magnetic textures.

Original languageEnglish
Article number064069
JournalPhysical Review Applied
Issue number6
Publication statusPublished - 2020 Dec 24


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