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5 March 2021 Terahertz time-domain imaging with a photoconductive focal-plane array
Xurong Li, Mona Jarrahi
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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.
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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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KEYWORDS
Staring arrays
Imaging arrays
Imaging systems
Imaging spectroscopy
Signal processing
Terahertz radiation
Spectral resolution
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