Terahertz 3D Laser Tomography

by Ibtisam Aslam, Phoebe Chen, Ching Hsueh

This project developed and demonstrated a terahertz (THz) imaging system using a custom quantum cascade laser (QCL) with laser-feedback interferometry (LFI) and integrated motion control of targets. The system achieved high-resolution, rapid acquisition of both amplitude and phase information, enabling precise scanning and imaging of biological and material samples. . The project also implemented advanced image preprocessing, feature extraction, and 3D reconstruction techniques to enhance data quality and interpretation, establishing a robust platform for future biomedical and material science investigations.

Themes

Best Biomedical Device or Systems

Technologies and Skills

Image Processing: Preprocessing, feature extraction, and 3D reconstruction of THz imaging data.
Signal Processing: Analysis of amplitude and phase signals from laser-feedback interferometry.
Optomechanics: Design and alignment of optical components for precise THz imaging.
Laser Imaging: Operation and optimization of quantum cascade laser (QCL) systems.
Motion Control: Hardware control of targets and scanning stages for accurate image acquisition.

School

School of Electrical Engineering and Computer Science

Supervisors

Karl Bertling, Jari Torniainen

Project Source

REIT4841