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5 March 2021 Ultrafast speckle-free time-resolved photography for the investigation of pulsed laser ablation in liquids
Norbert Linz, Sebastian Freidank, Alfred Vogel
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Proceedings Volume 11676, Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XXI; 1167613 (2021) https://doi.org/10.1117/12.2582927
Event: SPIE LASE, 2021, Online Only
Abstract
Pulsed laser ablation in liquids (LAL) is a growing field for the generation of metallic nanoparticles, but a comprehensive picture of the fundamental mechanisms is still missing. The process is always associated with rapid material ejection, shock waves and cavitation. Time-resolved photography with speckle-free illumination at exposure times below 200 ps can “freeze” these events and provide diffraction-limited resolution. We present a novel light source fulfilling these demands based on a SBS compressed Q-switched laser pulse pumping a dye cell and illustrate it’s utility through photography of LAL events on a gold target.
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Norbert Linz, Sebastian Freidank, and Alfred Vogel "Ultrafast speckle-free time-resolved photography for the investigation of pulsed laser ablation in liquids", Proc. SPIE 11676, Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XXI, 1167613 (5 March 2021); https://doi.org/10.1117/12.2582927
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KEYWORDS
Photography
Laser ablation
Liquids
Ultrafast phenomena
Nanoparticles
Picosecond phenomena
Spatial resolution
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