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Optics Letters

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  • Vol. 36, Iss. 15 — Aug. 1, 2011
  • pp: 2961–2963

Development of a nanosecond discharge-enhanced laser plasma spectroscopy

Weidong Zhou, Kexue Li, Xiafen Li, Huiguo Qian, Jie Shao, Xiaodong Fang, Pinhua Xie, and Wenqing Liu  »View Author Affiliations


Optics Letters, Vol. 36, Issue 15, pp. 2961-2963 (2011)
http://dx.doi.org/10.1364/OL.36.002961


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Abstract

A nanosecond pulse discharge circuit is developed and used to enhance the optical emission of laser plasma. An intense discharge spark was observed with a peak discharge current of 1.9 kA and a peak power of 6.5 MW . The main electric energy deposition only lasted for 40 ns . An intense optical emission was observed. The line intensity of plasma emission was greatly increased along with an improved signal-to-noise ratio, in comparison with that using a microsecond pulse discharge circuit. From the measured spectra, electron temperature and electron number density were estimated. The mechanism of the optical emission enhancement was briefly discussed.

© 2011 Optical Society of America

OCIS Codes
(300.2140) Spectroscopy : Emission
(300.6365) Spectroscopy : Spectroscopy, laser induced breakdown

ToC Category:
Spectroscopy

History
Original Manuscript: March 1, 2011
Revised Manuscript: May 7, 2011
Manuscript Accepted: July 7, 2011
Published: August 1, 2011

Citation
Weidong Zhou, Kexue Li, Xiafen Li, Huiguo Qian, Jie Shao, Xiaodong Fang, Pinhua Xie, and Wenqing Liu, "Development of a nanosecond discharge-enhanced laser plasma spectroscopy," Opt. Lett. 36, 2961-2963 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-15-2961


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