Virtually structured illumination for terahertz super-resolution imaging

Fleming, James; Downes, Lucy; Girkin, John; Weatherill, Kevin

Abstract

We demonstrate far-field super-resolution imaging in the terahertz (THz) frequency band by using a structured illumination via the virtually structured detection (VSD) method. Leveraging our previously reported high-speed, high-sensitivity atomic-based THz imager, we achieve a resolution enhancement of (74 ± 3)% at 0.55 THz, without the aid of deconvolution methods. We show a high-speed THz imaging system is compatible with the use of advanced optical techniques, with potential disruptive effects on applications requiring both high speed and high spatial resolution imaging in the THz range.

Citation

Fleming, J., Downes, L., Girkin, J., & Weatherill, K. (2025). Virtually structured illumination for terahertz super-resolution imaging. Optics Express, 33(12), 26509-26516. https://doi.org/10.1364/oe.563675

• Journal Article Type: Article
• Acceptance Date: Jun 5, 2025
• Online Publication Date: Jun 12, 2025
• Publication Date: Jun 16, 2025
• Deposit Date: Jun 16, 2025
• Publicly Available Date: Jun 17, 2025
• Journal: Optics Express
• Electronic ISSN: 1094-4087
• Publisher: Optica
• Peer Reviewed: Peer Reviewed
• Volume: 33
• Issue: 12
• Pages: 26509-26516
• DOI: https://doi.org/10.1364/oe.563675
• Public URL: https://durham-repository.worktribe.com/output/4092994