Spectroscopic analyses during femtosecond laser ablation of hydroxyapatite

Floralice Marimona Miroiu; Ion N. Mihailescu; Joerg Hermann; Marc L. Sentis

doi:10.1117/12.583024

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21 October 2004 Spectroscopic analyses during femtosecond laser ablation of hydroxyapatite

Floralice Marimona Miroiu, Ion N. Mihailescu, Joerg Hermann, Marc L. Sentis

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Proceedings Volume 5581, ROMOPTO 2003: Seventh Conference on Optics; (2004) https://doi.org/10.1117/12.583024
Event: ROMOPTO 2003: Seventh Conference on Optics, 2003, Constanta, Romania

Abstract

The plasma generated by ablation of hydroxyapatite Ca₁₀(PO₄)₆(OH)₂ with ultrashort laser pulses was studied in order to get a deeper insight in the fundamental mechanisms of the interaction of femtosecond laser pulses with the biocompatible target material. First, the propagation of the luminous plasma plume was observed using a fast ICCD camera while time- and space-resolved emission spectroscopy was employed to measure the plasma composition and its evolution as a function of time and space. It is shown that the kinetic energies of ablated atoms and ions are one order of magnitude smaller than those generated by hydroxypatite nanosecond laser ablation. Rather low temperatures of about 3500 and 2500 K are deduced from the relative intensity of spectral lines.

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Floralice Marimona Miroiu, Ion N. Mihailescu, Joerg Hermann, and Marc L. Sentis "Spectroscopic analyses during femtosecond laser ablation of hydroxyapatite", Proc. SPIE 5581, ROMOPTO 2003: Seventh Conference on Optics, (21 October 2004); https://doi.org/10.1117/12.583024

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