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12 March 2024 Single-shot ultrafast terahertz imaging for non-transparent dynamics
J. Dong, P. You, A. Tomasino, A. Yurtsever, R. Morandotti
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Proceedings Volume 12870, Real-time Measurements, Rogue Phenomena, and Single-Shot Applications IX; 1287007 (2024) https://doi.org/10.1117/12.3005242
Event: SPIE LASE, 2024, San Francisco, California, United States
Abstract
Real-time imaging of ultrashort events on picosecond timescales has proven pivotal in unveiling various fundamental mechanisms in physics, chemistry, and biology. Current single-shot ultrafast imaging schemes operate only at conventional optical wavelengths, being suitable solely within an optically transparent framework. Here, leveraging on the unique penetration capability of terahertz radiation, we demonstrate a single-shot ultrafast imaging system that can capture multiple frames of a complex ultrafast scene in non-transparent media with sub-picosecond temporal resolutions. By multiplexing an optical probe beam in both the time and spatial-frequency domains, we encode the terahertz-captured dynamics into distinct spatial-frequency regions of a multiplexed optical image, which is then computationally decoded and reconstructed. Our approach opens up the investigation of non-repeatable or destructive events that occur in optically-opaque scenarios.
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(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.
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J. Dong, P. You, A. Tomasino, A. Yurtsever, and R. Morandotti "Single-shot ultrafast terahertz imaging for non-transparent dynamics", Proc. SPIE 12870, Real-time Measurements, Rogue Phenomena, and Single-Shot Applications IX, 1287007 (12 March 2024); https://doi.org/10.1117/12.3005242
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KEYWORDS
Terahertz radiation
Ultrafast imaging
Ultrafast phenomena
Multiplexing
Imaging systems
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