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Title: Optimally enhanced optical emission in laser-induced air plasma by femtosecond double-pulse

In laser-induced breakdown spectroscopy, a femtosecond double-pulse laser was used to induce air plasma. The plasma spectroscopy was observed to lead to significant increase of the intensity and reproducibility of the optical emission signal compared to femtosecond single-pulse laser. In particular, the optical emission intensity can be optimized by adjusting the delay time of femtosecond double-pulse. An appropriate pulse-to-pulse delay was selected, that was typically about 50 ps. This effect can be especially advantageous in the context of femtosecond laser-induced breakdown spectroscopy, plasma channel, and so on.
Authors:
 [1] ;  [2] ; ; ; ;  [1] ; ;  [3] ;  [4] ;  [1] ;  [2]
  1. Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012 (China)
  2. (China)
  3. State Key Laboratory of Laser Interaction with Matter, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033 (China)
  4. Institute of Theoretical Chemistry, State Key Laboratory of Theoretical and Computational Chemistry, Jilin University, Changchun 130012 (China)
Publication Date:
OSTI Identifier:
22218555
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 20; Journal Issue: 10; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; AIR; COMPARATIVE EVALUATIONS; EMISSION SPECTROSCOPY; LASER-PRODUCED PLASMA; LASERS; LIGHT TRANSMISSION; PLASMA DIAGNOSTICS; PULSES; TIME DELAY; VELOCITY