Work

Enhancement in terahertz imaging of transparent objects using phase contrast methods in a 4f optical system

Year: 2025

Type: article

Abstract: In this study, the optical system designed to improve the visibility of transparent objects using terahertz radiation at a frequency of 260 GHz is presented. The setup employs the specific lens arrangement known as a 4f system. The imaging was performed using the positive and negative phase contrast methods, where dedicated phase filters introduced a phase delay in the central part of the Fourier plane. A significant improvement in contrast for the transparent samples was achieved, with contrast enhancement of 13.51 and 12.90, respectively.

Source: Optics Express

DOI: 10.1364/oe.565551

Authors: Adrianna Nieradka, Paweł Komorowski, Mateusz Kaluza, Agnieszka Siemion

Institutions: Warsaw University of Technology, Military University of Technology in Warsaw

Language: English

Topic: Terahertz technology and applications

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,270

Funder: Narodowe Centrum Nauki