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Applied Optics

Applied Optics


  • Vol. 42, Iss. 30 — Oct. 20, 2003
  • pp: 6052–6056

Supersensitive detection of sodium in water with use of dual-pulse laser-induced breakdown spectroscopy

Akira Kuwako, Yutaka Uchida, and Katsuji Maeda  »View Author Affiliations

Applied Optics, Vol. 42, Issue 30, pp. 6052-6056 (2003)

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Laser-induced breakdown spectroscopy has been used to detect sodium (Na) in water. Laser-induced breakdown was formed by dual-pulse and crossed beam Nd:YAG lasers on a water film. To improve the detection sensitivity, the fluorescence intensity dependence on timing between laser pulses, the delay time of fluorescence detection timing, the gate width of fluorescence detection period, and the laser energy were investigated. Under the optimized conditions, the detection limit of Na in water was achieved in the range of 0.1 parts per billion. The developed system is applicable for quick and supersensitive detection of Na atoms in water.

© 2003 Optical Society of America

OCIS Codes
(140.0140) Lasers and laser optics : Lasers and laser optics
(140.3440) Lasers and laser optics : Laser-induced breakdown
(300.0300) Spectroscopy : Spectroscopy
(300.6500) Spectroscopy : Spectroscopy, time-resolved

Original Manuscript: January 18, 2003
Revised Manuscript: May 30, 2003
Published: October 20, 2003

Akira Kuwako, Yutaka Uchida, and Katsuji Maeda, "Supersensitive detection of sodium in water with use of dual-pulse laser-induced breakdown spectroscopy," Appl. Opt. 42, 6052-6056 (2003)

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