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    Area of Science:

    • Spintronics
    • Terahertz (THz) technology
    • Optical engineering

    Background:

    • Spintronic terahertz emitters offer broad frequency bandwidth and low-cost scalability.
    • Current systems require bulky free-space lasers and complex setups, hindering industrial adoption.
    • Industrial applications demand robust, compact, and safe terahertz sources.

    Purpose of the Study:

    • To develop a fully fiber-coupled spintronic terahertz emitter.
    • To create a compact and practical terahertz near-field imaging system.
    • To address the limitations of current terahertz generation and imaging technologies.

    Main Methods:

    • Integration of spintronic terahertz emitters with single-mode fiber waveguiding.
    • Development of a novel fiber-tip emitter solution.
    • Characterization of the terahertz near-field imaging system's spatial resolution.

    Main Results:

    • Demonstration of a fully fiber-coupled spintronic terahertz emitter system.
    • Achieved a 90%-10% knife-edge-response spatial resolution of 30 µm in terahertz near-field imaging.
    • Enabled a simple and straightforward terahertz near-field imaging setup.

    Conclusions:

    • The fiber-tip spintronic terahertz emitter is a significant advancement for practical terahertz applications.
    • This technology facilitates the development of robust, compact, and scalable terahertz sources.
    • The developed system paves the way for widespread industrial use of spintronic terahertz technology.