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3D printed diffractive terahertz lenses.

Walter D Furlan, Vicente Ferrando, Juan A Monsoriu

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    |April 16, 2016
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    Summary
    This summary is machine-generated.

    Custom 3D printed diffractive terahertz (THz) lenses offer a cost-effective solution for THz imaging systems. These lenses exhibit unique focusing properties, enabling advanced applications.

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    Area of Science:

    • Optics and Photonics
    • Terahertz (THz) Technology
    • Additive Manufacturing

    Background:

    • Terahertz (THz) systems require specialized optical components for focusing and imaging.
    • Traditional THz lens fabrication can be complex and expensive.
    • 3D printing offers a potential solution for creating custom optical elements.

    Purpose of the Study:

    • To design and fabricate custom diffractive terahertz (THz) lenses using 3D printing.
    • To evaluate the focusing properties and imaging capabilities of these 3D printed THz lenses.
    • To demonstrate novel functionalities such as extended depth of focus and bifocalization.

    Main Methods:

    • Material screening and selection for THz applications.
    • Design of phase binary diffractive lenses with periodic and aperiodic radial profiles.
    • Fabrication of lenses using polyamide material via 3D printing.
    • Characterization of focusing properties by computing and measuring the axial point spread function (PSF).

    Main Results:

    • Successfully fabricated functional diffractive THz lenses from polyamide using 3D printing.
    • Demonstrated reliable focusing and imaging capabilities of the 3D printed lenses at 0.625 THz.
    • Achieved unprecedented lens functionalities, including extended depth of focus and bifocalization.

    Conclusions:

    • Inexpensive 3D printed diffractive THz lenses are suitable for focusing and imaging applications.
    • Additive manufacturing enables the creation of THz lenses with custom and advanced optical properties.
    • This technology opens new avenues for cost-effective and versatile THz system development.