Magnetically tunable diffractive optical elements based on ion-irradiated ultrathin ferromagnetic stacks.

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  • Additional Information
    • Source:
      Publisher: Optica Publishing Group Country of Publication: United States NLM ID: 7708433 Publication Model: Print Cited Medium: Internet ISSN: 1539-4794 (Electronic) Linking ISSN: 01469592 NLM ISO Abbreviation: Opt Lett Subsets: PubMed not MEDLINE; MEDLINE
    • Publication Information:
      Publication: Washington, DC : Optica Publishing Group
      Original Publication: New York, Optical Society of America.
    • Abstract:
      We report a novel type of magnetically tunable diffractive optical element (DOE) based on ultrathin ferromagnetic (FM) Pt/Co stacks. The Pt/Co stacks are irradiated by Ar + ions at selected areas so that the perpendicular anisotropy is spatially modulated and the DOEs can be tuned by an external magnetic field through the magnetooptical effect. Based on this concept, a diffraction grating and a Fresnel zone plate (FZP) were developed, and complementary experimental results corroborate that a magnetic field can simultaneously manipulate both the zeroth and the first diffraction orders of these DOEs. Importantly, this effect can be utilized to enhance or hide the image formed by the FZP. Our studies pave the way toward developing compact and high-precision DOEs with fast and robust tunability, facilitating various applications spanning a wide spectrum range.
    • Publication Date:
      Date Created: 20230501 Date Completed: 20230502 Latest Revision: 20230502
    • Publication Date:
      20240829
    • Accession Number:
      10.1364/OL.486633
    • Accession Number:
      37126260