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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 51, Iss. 34 — Dec. 1, 2012
  • pp: 8141–8146

Effects of laser pulse sequence on laser-induced soil plasma emission

Jinzhong Chen, Zhenyu Chen, Jiang Sun, Xu Li, Zechao Deng, and Yinglong Wang  »View Author Affiliations


Applied Optics, Vol. 51, Issue 34, pp. 8141-8146 (2012)
http://dx.doi.org/10.1364/AO.51.008141


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Abstract

In this study, we investigated the effects of a sequence of laser pulses on the plasma emission intensity, plasma temperature, and electron density of laser-induced soil plasma. The experimental results indicate that the plasma radiation was gradually strengthened as the laser-pulse sequence progressed. The theoretical results show that the spectral line intensity and spectral signal-to-background ratio of the elements Fe, Mn, K, and Ti were strongest for plasma from the sixth laser pulse. These data suggest that repeatedly ablating the same surface position of a soil sample with a sequence of laser pulses can enhance the laser-induced breakdown spectroscopy signal.

© 2012 Optical Society of America

OCIS Codes
(140.3440) Lasers and laser optics : Laser-induced breakdown
(300.2140) Spectroscopy : Emission
(350.5400) Other areas of optics : Plasmas
(300.6365) Spectroscopy : Spectroscopy, laser induced breakdown

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: June 28, 2012
Revised Manuscript: October 3, 2012
Manuscript Accepted: October 26, 2012
Published: November 28, 2012

Citation
Jinzhong Chen, Zhenyu Chen, Jiang Sun, Xu Li, Zechao Deng, and Yinglong Wang, "Effects of laser pulse sequence on laser-induced soil plasma emission," Appl. Opt. 51, 8141-8146 (2012)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-51-34-8141

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