Terahertz pixel-super-resolution imaging with a plasmonic focal-plane array

Xurong Li; Deniz Mengu; Aydogan Ozcan; Mona Jarrahi

doi:10.1117/12.2647666

13 March 2023 Terahertz pixel-super-resolution imaging with a plasmonic focal-plane array

Xurong Li, Deniz Mengu, Aydogan Ozcan, Mona Jarrahi

Proceedings Volume PC12420, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XVI; PC124200A (2023) https://doi.org/10.1117/12.2647666
Event: SPIE OPTO, 2023, San Francisco, California, United States

Abstract

We present a terahertz focal-plane array comprised of ~0.3 million plasmonic nano-antennas that can generate ultrafast temporal and hyperspectral terahertz images with more than 3 THz bandwidth and 60 dB signal-to-noise ratio. Utilizing the rich spectral information of the focal-plane array, a deep convolutional neural network can be trained to super-resolve images of objects. As the first proof-of-concept, a 16-fold resolution enhancement with more than a 1-kilo effective pixel count is accomplished on etched silicon objects with subwavelength thickness variations. We also resolve terahertz videos of dynamic objects at 16 frames per second with the spectral information preserved.

Conference Presentation

Citation Download Citation

Xurong Li, Deniz Mengu, Aydogan Ozcan, and Mona Jarrahi "Terahertz pixel-super-resolution imaging with a plasmonic focal-plane array", Proc. SPIE PC12420, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XVI, PC124200A (13 March 2023); https://doi.org/10.1117/12.2647666

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