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Time evolution of the infrared laser ablation plasma plume of SiO

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Abstract

The spatio-temporal evolution of the silicon monoxide SiO plasma produced by a high-power CO2 pulsed laser has been investigated using optical emission spectroscopy (OES) and imaging methods. The formed plasma was found to be strongly ionized, yielding Si+, O+, Si2+, O2+ and Si3+ species, rich in neutral silicon and oxygen atoms, and very weak molecular bands of SiO time-integrated and time-resolved two-dimensional OES plasma profiles were recorded as a function of emitted wavelength and distance from the target. The temporal behavior of specific emission lines of Si, Si+, O+, Si2+ and O2+ was characterized. The results show a faster decay of O2+ and Si2+ than that of O+, Si+ and Si. The Stark broadening of isolated single-ionized silicon emission lines was employed for deducing the electron density during the plasma expansion. The relative intensities of two Si2+ lines were used to calculate the time evolution of the plasma temperature.

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Acknowledgments

We gratefully acknowledge the support received by the MICINN (Spain, Ministerio de Ciencia e Innovación), Project: CTQ2010-15680 for this research.

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Authors and Affiliations

  1. Instituto de Estructura de la Materia, CSIC, Serrano 121, 28006, Madrid, Spain

    L. Diaz

  2. Departamento de Química-Física Aplicada, Facultad de Ciencias (UAM), 28049, Madrid, Spain

    J. J. Camacho, J. P. Cid & J. M. L. Poyato

  3. Instituto de Química-Física “Rocasolano”, CSIC, Serrano 119, 28006, Madrid, Spain

    M. Martin

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  1. L. Diaz
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  2. J. J. Camacho
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  3. J. P. Cid
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  5. J. M. L. Poyato
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Correspondence to L. Diaz.

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Diaz, L., Camacho, J.J., Cid, J.P. et al. Time evolution of the infrared laser ablation plasma plume of SiO. Appl. Phys. A 117, 125–129 (2014). https://doi.org/10.1007/s00339-014-8287-5

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  • DOI: https://doi.org/10.1007/s00339-014-8287-5

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