3D-Printed Components for Cost-Effective Polarisation Sensing of Terahertz Radiation

Area of Science:

• Optics and Photonics
• Materials Science
• Electromagnetics

Background:

• Terahertz (THz) technology requires efficient polarization sensing components.
• Existing polarizers, like wire-grid types, can be expensive and difficult to customize.
• 3D printing offers a promising avenue for fabricating custom optical elements.

Purpose of the Study:

• To investigate the feasibility of using 3D-printed structures for polarization sensing in the THz frequency range.
• To develop cost-effective and accessible polarization-sensitive sensors.
• To identify optimal materials, additives, fill factors, and dimensions for 3D-printed THz polarizers.

Main Methods:

• Utilized Fused Deposition Modeling (FDM) for 3D printing optical components.
• Experimented with various commercially available filaments and additives.
• Designed and manufactured sub-terahertz structures for polarization determination.
• Tested polarizers in two setups to verify narrow-band and broad-band operation across the THz spectrum.
• Evaluated performance by changing the angular position of the elements.

Main Results:

• Successfully manufactured 3D-printed polarizers with good optical quality and efficiency.
• Demonstrated both narrow-band and broad-band functionality across the THz spectrum.
• Achieved performance comparable to commercial wire-grid polarizers.
• Identified key parameters (materials, additives, fill factors, dimensions) for optimal THz radiation manipulation.

Conclusions:

• 3D printing is a viable technique for creating cost-effective THz polarizers.
• The developed polarizers offer a practical alternative to conventional methods.
• Further research can optimize material selection and design parameters for enhanced performance.