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    Three-dimensional printing offers a cost-effective method for creating terahertz (THz) optics. These 3D-printed waveplates demonstrate broadband performance suitable for advanced THz applications.

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    Area of Science:

    • Terahertz (THz) photonics
    • Additive manufacturing
    • Optics fabrication

    Background:

    • Fused deposition modeling (FDM) is a cost-efficient 3D printing technique.
    • THz optics are crucial for various spectroscopic and high-field applications.
    • Existing THz optics often have limited bandwidths.

    Purpose of the Study:

    • To investigate the fabrication and performance of 3D-printed THz waveplates using FDM.
    • To assess the operational bandwidth and characteristics of these 3D-printed optics.
    • To demonstrate their suitability for broadband THz applications.

    Main Methods:

    • Utilized fused deposition modeling (FDM) for 3D printing of THz waveplates.
    • Employed a broadband THz source (0.08–1.5 THz) for performance testing.
    • Investigated quarter-waveplates, half-waveplates, q-plates, and spiral phaseplates.

    Main Results:

    • 3D-printed waveplates demonstrated effective operation up to 0.6 THz.
    • The fabricated waveplates exhibited bandwidths comparable to commercial alternatives.
    • Broadband performance was achieved, enabling use with few-cycle THz pulses.

    Conclusions:

    • FDM-based 3D printing is a viable method for producing cost-efficient THz optics.
    • 3D-printed waveplates offer broadband performance suitable for advanced THz applications like nonlinear spectroscopy.
    • This technology expands the accessibility and application range of THz optical components.