Laser ablation comparison by picosecond pulses train and nanosecond pulse. (22nd October 2015)

• Record Type: Journal Article
• Authors: Lednev, V N; Filippov, M N; Bunkin, A F; Pershin, S M
• Is Part Of: Laser physics letters. Volume 12:Number 12(2015:Dec.)
• Publication Date: 2015-10-22
• Subjects: laser ablation -- ablation threshold -- picosecond laser ablation -- laser plasma; Lasers -- Periodicals; Physics -- Periodicals; 621.366
• DOI: 10.1088/1612-2011/12/12/126001
• Languages: English
• ISSNs: 1612-2011

Abstract

Abstract: A comparison of laser ablation by a train of picosecond pulses and nanosecond pulses revealed a difference in laser craters, ablation thresholds, plasma sizes and spectral line intensities. Laser ablation with a train of picosecond pulses resulted in improved crater quality while ablated mass decreased up to 30%. A reduction in laser plasma dimensions for picosecond train ablation was observed while the intensity of atomic/ionic lines in the plasma spectra was greater by a factor of 2–4 indicating an improved excitation and atomization in the plasma.