Wire-grid polarizer sheet in the terahertz region fabricated by nanoimprint technology

TL;DR

This paper reports on the fabrication of terahertz wire-grid polarizer sheets on flexible substrates using nanoimprint technology, demonstrating ideal polarization properties at low cost and potential for further enhancement through material selection.

Contribution

It introduces a novel fabrication method for terahertz polarizers on flexible substrates with effective medium theory validation and suggests avenues for improving polarization performance.

Findings

Achieved ideal polarization in the terahertz region

Effective medium theory matches experimental results

Low-cost fabrication process

Abstract

Wire-grid polarizer sheets in the terahertz region have been fabricated on flexible substrates by nanoimprint technology. They show ideal polarization property in the terahertz frequency region whereas the cost is very low. Since the wire pitch is far smaller than the wavelength, the effective medium theory agrees well with experimental results. The effective medium theory shows possibility of further improvement of polarization properties by selecting appropriate materials for wire grids.