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13 March 2024 Diffraction-gated real-time ultrahigh-speed mapping photography using a digital micromirror device
Xianglei Liu, Patrick Kilcullen, Youmin Wang, Brandon Helfield, Jinyang Liang
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Proceedings Volume 12900, Emerging Digital Micromirror Device Based Systems and Applications XVI; 1290002 (2024) https://doi.org/10.1117/12.3005461
Event: SPIE OPTO, 2024, San Francisco, California, United States
Abstract
Single-shot high-speed mapping photography is a powerful tool for studying fast dynamics in diverse applications. Despite much recent progress, existing methods are still strained by the trade-off between sequence depth and light throughput, errors induced by parallax, limited imaging dimensionality, and the potential damage by pulsed illumination. To overcome these limitations, we explore time-varying optical diffraction as a new gating mechanism to obtain ultrahigh imaging speed. Inspired by the pulse front tilt-gated imaging and the space-time duality in optics, we embody the proposed paradigm in the developed diffraction-gated real-time ultrahigh-speed mapping (DRUM) photography. The sweeping optical diffraction envelope generated by the inter-pattern transition of a digital micromirror device enables sequential time-gating at the sub-microsecond level. DRUM photography can capture a transient event in a single exposure at 4.8 million frames per second. We apply it to the investigation of femtosecond laser-induced breakdown in liquid and laser ablation in biological samples.
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(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.
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Xianglei Liu, Patrick Kilcullen, Youmin Wang, Brandon Helfield, and Jinyang Liang "Diffraction-gated real-time ultrahigh-speed mapping photography using a digital micromirror device", Proc. SPIE 12900, Emerging Digital Micromirror Device Based Systems and Applications XVI, 1290002 (13 March 2024); https://doi.org/10.1117/12.3005461
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KEYWORDS
Photography
Diffraction
Digital micromirror devices
Laser ablation
Biological imaging
Femtosecond phenomena
Bubbles
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