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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 11 — May. 23, 2011
  • pp: 10997–11006

Generation of high-temperature and low-density plasmas for improved spectral resolutions in laser-induced breakdown spectroscopy

X.N. He, W. Hu, C.M. Li, L.B. Guo, and Y.F. Lu  »View Author Affiliations


Optics Express, Vol. 19, Issue 11, pp. 10997-11006 (2011)
http://dx.doi.org/10.1364/OE.19.010997


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Abstract

Improved spectral resolutions were achieved in laser-induced breakdown spectroscopy (LIBS) through generation of high-temperature and low-density plasmas. A first pulse from a KrF excimer laser was used to produce particles by perpendicularly irradiating targets in air. A second pulse from a 532 nm Nd:YAG laser was introduced parallel to the sample surface to reablate the particles. Optical scattering from the first-pulse plasmas was imaged to elucidate particle formation in the plasmas. Narrower line widths (full width at half maximums: FWHMs) and weaker self-absorption were observed from time-integrated LIBS spectra. Estimation of plasma temperatures and densities indicates that high temperature and low density can be achieved simultaneously in plasmas to improve LIBS resolutions.

© 2011 OSA

OCIS Codes
(020.6580) Atomic and molecular physics : Stark effect
(350.5400) Other areas of optics : Plasmas
(300.6365) Spectroscopy : Spectroscopy, laser induced breakdown

ToC Category:
Spectroscopy

History
Original Manuscript: April 21, 2011
Revised Manuscript: May 3, 2011
Manuscript Accepted: May 11, 2011
Published: May 20, 2011

Citation
X.N. He, W. Hu, C.M. Li, L.B. Guo, and Y.F. Lu, "Generation of high-temperature and low-density plasmas for improved spectral resolutions in laser-induced breakdown spectroscopy," Opt. Express 19, 10997-11006 (2011)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-19-11-10997


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