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3D-printed diffractive elements induced accelerating terahertz Airy beam.

Changming Liu, Liting Niu, Kejia Wang

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    |December 14, 2016
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    Summary
    This summary is machine-generated.

    Researchers demonstrate an accelerating terahertz (THz) Airy beam using 3D-printed diffractive elements. This novel THz beam exhibits self-healing properties, paving the way for advanced THz imaging and communication systems.

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    Area of Science:

    • Optics and Photonics
    • Terahertz Science and Technology

    Background:

    • Terahertz (THz) beams are crucial for various applications due to their unique properties.
    • Controlling THz beam propagation and overcoming losses are significant challenges.

    Purpose of the Study:

    • To demonstrate an accelerating terahertz Airy beam.
    • To investigate its propagation dynamics and self-healing capabilities.

    Main Methods:

    • Design and 3D-print two diffractive elements for beam generation.
    • Utilize a 0.3-THz continuous wave source.
    • Perform numerical simulations and experimental validations.

    Main Results:

    • Successfully generated an accelerating terahertz Airy beam.
    • Observed and confirmed the beam's self-healing property in free space propagation.
    • Numerical simulations closely matched experimental observations.

    Conclusions:

    • The developed system effectively generates accelerating THz Airy beams.
    • The self-healing property enhances beam robustness.
    • Potential applications include novel THz imaging and robust communication links.