Ablation efficiency of gold at fs/ps laser treatment in water and air. (13th January 2022)

• Record Type: Journal Article
• Authors: Smirnov, N A; Kudryashov, S I; Rudenko, А А; Nastulyavichus, A A; Ionin, A A
• Is Part Of: Laser physics letters. Volume 19:Number 2(2022)
• Publication Date: 2022-01-13
• Subjects: gold -- ultrashort pulses -- single-shot pulse ablation in air and liquid -- filamentation; Lasers -- Periodicals; Physics -- Periodicals; 621.366
• DOI: 10.1088/1612-202X/ac46ab
• Languages: English
• ISSNs: 1612-2011

Abstract

Abstract: A comparison of single-pulse laser ablation of gold target by pulses with a 0.3–10 ps duration and a wavelength of 515 nm in air and in water was performed. The radiation was focused on the sample surface through the objectives with numerical apertures NA = 0.65 and 0.25. The influence of the medium, pulse duration, and spot size on the crater morphology was studied. A significant difference in crater morphology was found for different lenses. The ablation efficiency was studied by measuring the profiles of single-shot pulse craters using scanning force microscopy. The contribution of filamentation to the ablation process is shown quantitatively.