Main > Chinese Optics Letters >  Volume 18 >  Issue 8 >  Page 083001 > Article
  • Abstract
  • Abstract
  • Figures (6)
  • Tables (0)
  • Equations (3)
  • References (29)
  • Get PDF
  • View Full Text
  • Paper Information
  • Received: May. 9, 2020

    Accepted: Jun. 10, 2020

    Posted: Jul. 9, 2020

    Published Online: Jul. 10, 2020

    The Author Email: Jiaming Li (jmli@m.scnu.edu.cn)

    DOI: 10.3788/COL202018.083001

  • Get Citation
  • Copy Citation Text

    Nan Zhao, Jiaming Li, Qiongxiong Ma, Liang Guo, Qingmao Zhang. Periphery excitation of laser-induced CN fluorescence in plasma using laser-induced breakdown spectroscopy for carbon detection[J]. Chinese Optics Letters, 2020, 18(8): 083001

    Download Citation

  • !Citations Alert
  • Category
  • Spectroscopy
  • Share
Chinese Optics Letters, Vol. 18, Issue 8, 083001 (2020)

Periphery excitation of laser-induced CN fluorescence in plasma using laser-induced breakdown spectroscopy for carbon detection

Nan Zhao1,2, Jiaming Li1,2,3,*, Qiongxiong Ma1,2,3, Liang Guo1,2,3, and Qingmao Zhang1,2,3

Author Affiliations

  • 1Guangdong Provincial Key Laboratory of Nanophotonic Functional Materials and Devices, South China Normal University, Guangzhou 510631, China
  • 2Guangzhou Key Laboratory for Special Fiber Photonic Devices, South China Normal University, Guangzhou 510631, China
  • 3Guangdong Provincial Key Laboratory of Industrial Ultrashort Pulse Laser Technology, Shenzhen 518055, China

Abstract

Carbon is hard to be sensitively detected in laser-induced breakdown spectroscopy (LIBS). The optical emission can be significantly enhanced by resonantly exciting CN radicals in the plasma center using LIBS assisted with laser-induced fluorescence (LIBS-LIF). However, the nitrogen source for CN formation is provided by ambient gas. Therefore, we propose a new approach of periphery excitation in plasma to improve CN fluorescence. The optical and spatial characteristics of CN radicals in plasma were discussed. A fluorescence map was established by combining focal point location and fluorescent intensity, demonstrating that plasma periphery had 4.2 times stronger fluorescence than the center.

keywords

Please Enter Your Email: