International Conference Physics.SPb/2025
Laser physics and laser optics

Investigation of spectral characteristics of plasma jet during laser ablation of calcium hydroxyapatite

Yu. D. Dudnik, M. I. Vasil’ev, A. A. Safronov, V. N. Shiryaev, O. B. Vasil'eva

Institute of Problems of Electrophysics of the Russian Academy of Sciences, St. Petersburg

Abstract: The results of a plasma jet analysis are presented during the deposition of calcium hydroxyapatite Ca$_{10}$(PO$_4$)$_6$(OH)$_2$ coatings on Ti–6Al–4V substrates via laser ablation of targets with a KrF excimer laser. The deposition was performed under an oxygen pressure of 10$^{-4}$ Torr in a vacuum chamber at room temperature. During the ablation process, emission spectra were recorded using two fast spectrophotometers in the 268–674 nm range. A comparative analysis of the spectroscopic data is performed, and the results of color image processing and the characteristics of the plasma jet propagation during ablation are estimated.

Keywords: pulsed laser deposition, laser ablation, thin films, plasma jet, emission spectra.

Received: 29.04.2025
Revised: 19.06.2025
Accepted: 24.10.2025

DOI: 10.61011/OS.2025.10.61941.7927-25