Plasma and nanoparticle shielding during pulsed laser ablation in liquids cause ablation efficiency decrease
نویسندگان
چکیده
Understanding shielding cross-effects is a prerequisite for maximal power-specific nanosecond laser ablation in liquids (LAL). However, discrimination between cavitation bubble (CB), nanoparticle (NP), and shielding, e.g., by the plasma or transient vapor layer, challenging. Therefore, CB imaging shadowgraphy performed to better understand beam-NP interaction during LAL. By comparing fluence-dependent volume ablations with 1 ns pulses reports from literature, we find larger energy-specific volumes 7 ns-ablation. The increased higher pulse durations could be first explanation of efficiency decrease reported these systems having durations. Consequently, ns-LAL shows superior efficiency. Moreover, cascade occurs when focal plane shifted into liquid. This effect enhanced NPs are present fluid. Even minute amounts trapped stationary layer energy significantly, even under liquid flow. this local concentration sticking film has so far not been considered. It presents an essential obstacle high-yield LAL, already second that arrives presenting source satellite bubbles. Hence, measures lower NP on target must investigated future.
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ژورنال
عنوان ژورنال: Opto-Electronic Advances
سال: 2021
ISSN: ['2096-4579']
DOI: https://doi.org/10.29026/oea.2021.200072