Broadband high-resolution terahertz single-pixel imaging

TL;DR

This paper introduces a high-resolution, broadband terahertz single-pixel imaging system using a metallic ring and random masks, achieving up to 1200 x 1200 pixel images with low error across 3-13 THz.

Contribution

It presents a simple, effective single-pixel imaging approach with a novel mask digitization technique for terahertz frequencies, enabling high-resolution imaging.

Findings

Achieves high pixel resolution of 1200 x 1200 pixels

Operates effectively across 3-13 THz frequency range

Produces low mean squared error in reconstructed images

Abstract

We report a simple single-pixel imaging system with a low mean squared error in the entire terahertz frequency region (3-13 THz) that employs a thin metallic ring with a series of directly perforated random masks and a subpixel mask digitization technique. This imaging system produces high pixel resolution reconstructed images, up to 1200 x 1200 pixels, and imaging area of 32 mm x 32 mm. It can be extended to develop advanced imaging systems in the near-ultraviolet to terahertz region.