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Nanoscale magnetic imaging using circularly polarized high-harmonic radiation.

ABSTRACT: This work demonstrates nanoscale magnetic imaging using bright circularly polarized high-harmonic radiation. We utilize the magneto-optical contrast of worm-like magnetic domains in a Co/Pd multilayer structure, obtaining quantitative amplitude and phase maps by lensless imaging. A diffraction-limited spatial resolution of 49 nm is achieved with iterative phase reconstruction enhanced by a holographic mask. Harnessing the exceptional coherence of high harmonics, this approach will facilitate quantitative, element-specific, and spatially resolved studies of ultrafast magnetization dynamics, advancing both fundamental and applied aspects of nanoscale magnetism.

SUBMITTER: Kfir O

PROVIDER: S-EPMC5732000 | biostudies-literature | 2017 Dec

REPOSITORIES: biostudies-literature

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Nanoscale magnetic imaging using circularly polarized high-harmonic radiation.

Kfir Ofer O Zayko Sergey S Nolte Christina C Sivis Murat M Möller Marcel M Hebler Birgit B Arekapudi Sri Sai Phani Kanth SSPK Arekapudi Sri Sai Phani Kanth SSPK Steil Daniel D Schäfer Sascha S Albrecht Manfred M Cohen Oren O Mathias Stefan S Ropers Claus C

Science advances 20171215 12

This work demonstrates nanoscale magnetic imaging using bright circularly polarized high-harmonic radiation. We utilize the magneto-optical contrast of worm-like magnetic domains in a Co/Pd multilayer structure, obtaining quantitative amplitude and phase maps by lensless imaging. A diffraction-limited spatial resolution of 49 nm is achieved with iterative phase reconstruction enhanced by a holographic mask. Harnessing the exceptional coherence of high harmonics, this approach will facilitate qua ...[more]

PMID: 29250601

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