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, Y. F. Lu

Research output: Contribution to journalArticle

32 Scopus citations

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.

Original languageEnglish (US)
Pages (from-to)10997-11006
Number of pages10
JournalOptics Express
Volume19
Issue number11
DOIs
StatePublished - May 23 2011

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Fingerprint Dive into the research topics of 'Generation of high-temperature and low-density plasmas for improved spectral resolutions in laser-induced breakdown spectroscopy'. Together they form a unique fingerprint.

  • Cite this