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      Nanoscale Magnetic Imaging using Circularly Polarized High-Harmonic Radiation

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          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 unique 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.

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          Author and article information

          Journal
          2017-06-23
          Article
          1706.07695
          414cd9f3-633d-4d31-83f1-2832e30757e4

          http://arxiv.org/licenses/nonexclusive-distrib/1.0/

          History
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          Ofer Kfir and Sergey Zayko contributed equally to this work. Presented in CLEO 2017 (Oral) doi.org/10.1364/CLEO_QELS.2017.FW1H.8
          physics.optics cond-mat.mes-hall

          Nanophysics,Optical materials & Optics
          Nanophysics, Optical materials & Optics

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