Pressure Pulses in Metal under Picosecond Laser Ablation

• Published in: Bulletin of the Lebedev Physics Institute Vol. 51; no. 2; pp. 52 - 56
• Main Authors: Kudryashov, S. I., Pivovarov, P. A., Priklonskii, V. I., Samokhin, A. A., Umanskaya, S. Ph, Tcherniega, N. V.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01-02-2024; Springer Nature B.V
• Subjects: Evaporation; Laser ablation; Physics; Physics and Astronomy; Pressure pulses; pressure generation mechanisms; picosecond ablation
• ISSN: 1068-3356; 1934-838X
• DOI: 10.3103/S1068335623602455

The behavior of pressure pulses excited in a metal ablated with picosecond laser pulses is analyzed. It is shown that with this effect, the contribution from the thermoacoustic mechanism can exceed the evaporation pressure even when a stationary evaporation regime is established. This pressure behavior differs markedly from that characteristic of the nanosecond regime and is consistent with the obtained experimental data on the monitoring of the recoil pressure under picosecond laser irradiation of lead and aluminum.