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arXiv · 2006.16552

Soft X-ray Vortex Beam detected by In-line Holography

Yuta Ishii·Kohei Yamamoto·Yuichi Yokoyama·Masaichiro Mizumaki·Hironori Nakao·Taka-hisa Arima·Yuichi Yamasaki
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Abstract

We demonstrate the in-line holography for soft x-ray vortex beam having an orbital angular momentum. A hologram is recorded as an interference between a Bragg diffraction wave from a fork grating and a divergence wave generated by a Fresnel zone plate. The obtained images exhibit fork-shaped interference fringes, which confirms the formation of the vortex beam. By analyzing the interference image, we successfully obtained the spiral phase distribution. The results demonstrate that the in-line holography technique is promising for the characterization of topological magnets, such as magnetic skyrmions.

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Yuta Ishii, Kohei Yamamoto, Yuichi Yokoyama, Masaichiro Mizumaki, Hironori Nakao, Taka-hisa Arima, Yuichi Yamasaki. 2020-06-30. Soft X-ray Vortex Beam detected by In-line Holography. https://doi.org/10.1103/physrevapplied.14.064069

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