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Applied Optics

Applied Optics


  • Editor: James C. Wyant
  • Vol. 46, Iss. 19 — Jul. 1, 2007
  • pp: 4026–4031

Measurements of aluminum and hydrogen microplasma

Christian G. Parigger, James O. Hornkohl, and László Nemes  »View Author Affiliations

Applied Optics, Vol. 46, Issue 19, pp. 4026-4031 (2007)

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We report time-averaged and time-resolved emission spectra subsequent to laser-induced optical breakdown of aluminum in laboratory air and in hydrogen gas. The microplasma generated by nominal 10   ns IR laser radiation shows Stark-broadened and shifted atomic lines. An analysis of the H α and H β Balmer series lines and selected aluminum lines allows one to determine electron number density in the range of 0.01 10 × 10 18 cm 3 early in the plasma decay. Atomic and molecular features are investigated for diagnostic applications in laser material processing.

© 2007 Optical Society of America

OCIS Codes
(140.3440) Lasers and laser optics : Laser-induced breakdown
(300.6210) Spectroscopy : Spectroscopy, atomic
(300.6390) Spectroscopy : Spectroscopy, molecular
(350.5400) Other areas of optics : Plasmas

ToC Category:
Laser-Induced Breakdown Spectroscopy, Plasmas, and Emission

Original Manuscript: October 12, 2006
Manuscript Accepted: December 15, 2006
Published: June 12, 2007

Christian G. Parigger, James O. Hornkohl, and László Nemes, "Measurements of aluminum and hydrogen microplasma," Appl. Opt. 46, 4026-4031 (2007)

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  11. C. G. Parigger, "Measurements of laser-induced plasma and optical breakdown spectra of aluminum," in Proceedings of the 18th International Conference on Spectral Line Shapes, E. Oks and M. Pindzola, eds. (AIP Conference Proceedings 874, 2006) pp. 101-111.

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