Terahertz inverse synthetic aperture radar imaging using self-mixing interferometry with a quantum cascade laser

H S Lui; T Taimre; K Bertling; Y L Lim; P Dean; S P Khanna; M Lachab; A Valavanis; D Indjin; E H Linfield; A G Davies; A D Rakić

doi:10.1364/OL.39.002629

Terahertz inverse synthetic aperture radar imaging using self-mixing interferometry with a quantum cascade laser

Opt Lett. 2014 May 1;39(9):2629-32. doi: 10.1364/OL.39.002629.

Authors

H S Lui, T Taimre, K Bertling, Y L Lim, P Dean, S P Khanna, M Lachab, A Valavanis, D Indjin, E H Linfield, A G Davies, A D Rakić

PMID: 24784063
DOI: 10.1364/OL.39.002629

Abstract

We propose a terahertz (THz)-frequency synthetic aperture radar imaging technique based on self-mixing (SM) interferometry, using a quantum cascade laser. A signal processing method is employed which extracts and exploits the radar-related information contained in the SM signals, enabling the creation of THz images with improved spatial resolution. We demonstrate this by imaging a standard resolution test target, achieving resolution beyond the diffraction limit.