中国物理B ›› 2020, Vol. 29 ›› Issue (6): 65203-065203.doi: 10.1088/1674-1056/ab84dc

• PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES • 上一篇    下一篇

Influence of polarization of laser beam on emission intensity of femtosecond laser-induced breakdown spectroscopy

Lan Yang(杨岚), Miao Liu(刘淼), Yi-Tong Liu(刘奕彤), Qing-Xue Li(李庆雪), Su-Yu Li(李苏宇), Yuan-Fei Jiang(姜远飞), An-Min Chen(陈安民), Ming-Xing Jin(金明星)   

  1. 1 Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China;
    2 College of Physics, Jilin University, Changchun 130012, China
  • 收稿日期:2020-02-25 修回日期:2020-03-26 出版日期:2020-06-05 发布日期:2020-06-05
  • 通讯作者: An-Min Chen E-mail:amchen@jlu.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11674128, 11674124, and 11974138), the Jilin Provincial Scientific and Technological Development Program, China (Grant No. 20170101063JC), and the Scientific and Technological Research Project of the Education Department of Jilin Province, China (Grant No. JJKH20200937KJ).

Influence of polarization of laser beam on emission intensity of femtosecond laser-induced breakdown spectroscopy

Lan Yang(杨岚)1,2, Miao Liu(刘淼)1, Yi-Tong Liu(刘奕彤)1, Qing-Xue Li(李庆雪)1, Su-Yu Li(李苏宇)1, Yuan-Fei Jiang(姜远飞)1, An-Min Chen(陈安民)1, Ming-Xing Jin(金明星)1   

  1. 1 Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China;
    2 College of Physics, Jilin University, Changchun 130012, China
  • Received:2020-02-25 Revised:2020-03-26 Online:2020-06-05 Published:2020-06-05
  • Contact: An-Min Chen E-mail:amchen@jlu.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11674128, 11674124, and 11974138), the Jilin Provincial Scientific and Technological Development Program, China (Grant No. 20170101063JC), and the Scientific and Technological Research Project of the Education Department of Jilin Province, China (Grant No. JJKH20200937KJ).

摘要: Laser-induced breakdown spectroscopy (LIBS) is an important technique which is widely used to analyze element composition. In order to improve the sensitivity of LIBS, much effort has been made to enhance the spectral intensity of LIBS by proposing a number of methods. In addition, we find that laser polarization has great influence on the emission intensity of femtosecond LIBS. By comparing the emission intensity of femtosecond LIBS in the circular polarization with that in the linear polarization, the spectral intensity in the case of circular polarization is stronger than that in the case of linear polarization. Moreover, this phenomenon is more obvious as laser energy increases. The polarization plays an important role in LIBS signal intensity. Based on the observation, the enhanced mechanism of the laser polarization for the spectral intensity is discussed in this paper, which will be helpful in spectral analysis and component analysis.

关键词: LIBS, femtosecond laser, laser polarization, spectral enhancement

Abstract: Laser-induced breakdown spectroscopy (LIBS) is an important technique which is widely used to analyze element composition. In order to improve the sensitivity of LIBS, much effort has been made to enhance the spectral intensity of LIBS by proposing a number of methods. In addition, we find that laser polarization has great influence on the emission intensity of femtosecond LIBS. By comparing the emission intensity of femtosecond LIBS in the circular polarization with that in the linear polarization, the spectral intensity in the case of circular polarization is stronger than that in the case of linear polarization. Moreover, this phenomenon is more obvious as laser energy increases. The polarization plays an important role in LIBS signal intensity. Based on the observation, the enhanced mechanism of the laser polarization for the spectral intensity is discussed in this paper, which will be helpful in spectral analysis and component analysis.

Key words: LIBS, femtosecond laser, laser polarization, spectral enhancement

中图分类号:  (Plasma production and heating by shock waves and compression)

  • 52.50.Lp
52.38.Mf (Laser ablation) 32.30.Jc (Visible and ultraviolet spectra) 42.62.Fi (Laser spectroscopy)