Terahertz pulse propagation in 3D-printed waveguide with metal wires component

Area of Science:

• Optics and Photonics
• Materials Science
• Terahertz Technology

Background:

• Terahertz (THz) waveguides are crucial for THz applications.
• 3D printing offers a versatile fabrication method for complex optical structures.
• Metal wire inclusions can influence THz wave propagation characteristics.

Purpose of the Study:

• To characterize the performance of 3D-printed hollow core Terahertz waveguides with integrated metal wires.
• To investigate broadband THz wave propagation within these novel waveguides.
• To validate experimental findings with theoretical predictions.

Main Methods:

• Utilized standard Terahertz time-domain spectroscopy (THz-TDS) for characterization.
• Fabricated hollow core waveguides using 3D printing with precise metal wire inclusions.
• Conducted measurements over a broad frequency range of 0.2-1.0 THz.

Main Results:

• Observed single-mode broadband Terahertz propagation in the fabricated waveguides.
• Successfully measured the loss coefficient and mode effective phase index.
• Experimental data showed excellent agreement with numerical simulation predictions.

Conclusions:

• 3D-printed hollow core Terahertz waveguides with metal wire inclusions demonstrate effective single-mode broadband THz wave guidance.
• THz-TDS is a suitable technique for characterizing such waveguides.
• The results support the potential of these waveguides for future Terahertz systems.