Dynamic control of magnetization spot arrays with three-dimensional orientations
Optics Express, ISSN: 1094-4087, Vol: 29, Issue: 2, Page: 961-973
2021
- 14Citations
- 5Captures
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Example: if you select the 1-year option for an article published in 2019 and a metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019. If you select the 3-year option for the same article published in 2019 and the metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019, 2018 and 2017.
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Article Description
We report a new paradigm for achieving magnetization spot arrays with controllable three-dimensional (3D) orientations. Toward this aim, we subtly design a tailored incident beam containing three parts and further demonstrate that the designed incident beam is phase-modulated radial polarization. Based on the raytracing model under tight focusing condition and the inverse Faraday effect on the magneto-optic (MO) film, the magnetization field components along the y-Axis and z-Axis directions are generated through the focus. In particular, we are able to garner orientation-Tunable 3D magnetization under different numerical apertures of the focusing objectives by adjusting the ratios between the three parts of incident beam. Apart from a single magnetization spot, magnetization spot arrays capable of dynamically controlling 3D orientation in each spot can also be achieved by multi-zone plate (MZP) phase filter. Such a robust magnetization pattern is attributed to not only the constructive interferences of three orthogonal focal field components, but also the position translation of each magnetization spot resulting from shifting phase of the MZP phase filter. It is expected that the research outcomes can be beneficial to spintronics, magnetic encryption and multi-value MO parallelized storage.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85099199032&origin=inward; http://dx.doi.org/10.1364/oe.412260; http://www.ncbi.nlm.nih.gov/pubmed/33726321; https://opg.optica.org/abstract.cfm?URI=oe-29-2-961; https://dx.doi.org/10.1364/oe.412260; https://opg.optica.org/oe/fulltext.cfm?uri=oe-29-2-961&id=445763
Optica Publishing Group
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