Terahertz time-domain imaging with a photoconductive focal-plane array

Xurong Li; Mona Jarrahi

doi:10.1117/12.2576381

5 March 2021 Terahertz time-domain imaging with a photoconductive focal-plane array

Xurong Li, Mona Jarrahi

Proceedings Volume 11685, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XIV; 1168504 (2021) https://doi.org/10.1117/12.2576381
Event: SPIE OPTO, 2021, Online Only

Abstract

Most state-of-the-art terahertz time-domain imaging technologies are based on single-pixel systems, which mechanically scan either the imaging object or the terahertz system, limiting the imaging speed. We present a new terahertz time-domain imaging modality using a terahertz photoconductive focal-plane array. The focal-plane array consists of plasmonic nano-antenna arrays on an LT-GaAs substrate. The dynamic range of a single pixel can reach up to 75 dB with more than a 4 THz bandwidth. We demonstrate clear terahertz images up to 2.5 THz. We also demonstrate that the focal-plane array can operate at video-rate imaging speeds.

Conference Presentation

Citation Download Citation

Xurong Li and Mona Jarrahi "Terahertz time-domain imaging with a photoconductive focal-plane array", Proc. SPIE 11685, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XIV, 1168504 (5 March 2021); https://doi.org/10.1117/12.2576381

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