Effect of laser polarization on molecular emission from femtosecond LIBS

2021 ◽  
Author(s):  
Yutong Chen ◽  
Yitong Liu ◽  
Qiuyun Wang ◽  
Suyu Li ◽  
Yuanfei Jiang ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Laser Induced Breakdown Spectroscopy ◽  
Laser Polarization ◽  
Molecular Emission ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown

This study investigated the effect of laser polarization on molecular bands of femtosecond laser-induced breakdown spectroscopy (LIBS). The results of AlO molecules indicated that the intensities of molecular emission bands...

Nanosecond laser-induced breakdown assisted by femtosecond laser pre-ionization in air: the effect on spatial resolution and continuous radiation

2020 ◽  
Vol 92 (2) ◽  
pp. 20701
Author(s):  
Bo Li ◽  
Xiaofeng Li ◽  
Zhifeng Zhu ◽  
Qiang Gao
Keyword(s):  
Femtosecond Laser ◽  
Spatial Resolution ◽  
Laser Induced Breakdown Spectroscopy ◽  
Nanosecond Laser ◽  
Breakdown Threshold ◽  
Powerful Technique ◽  
Breakdown Spectroscopy ◽  
Continuous Radiation ◽  
Laser Induced Breakdown

Laser-induced breakdown spectroscopy (LIBS) is a powerful technique for quantitative diagnostics of gases. The spatial resolution of LIBS, however, is limited by the volume of plasma. Here femtosecond-nanosecond dual-pulsed LIBS was demonstrated. Using this method, the breakdown threshold was reduced by 80%, and decay of continuous radiation was shortened. In addition, the volume of the plasma was shrunk by 85% and hence, the spatial resolution of LIBS was significantly improved.

Determination of fluorine in copper ore using laser-induced breakdown spectroscopy assisted by the SrF molecular emission band

2020 ◽  
Vol 35 (4) ◽  
pp. 754-761 ◽  
Author(s):  
Zhiyang Tang ◽  
Ran Zhou ◽  
Zhongqi Hao ◽  
Wen Zhang ◽  
Qingzhou Li ◽  
...  
Keyword(s):  
Emission Band ◽  
Molecular Band ◽  
Atomic Line ◽  
Laser Induced Breakdown Spectroscopy ◽  
Copper Ore ◽  
Molecular Emission ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown

The SrF molecular band as an alternative to the fluorine atomic line was proposed to detect fluorine in copper ore using LIBS technology in air.

Sign in / Sign up

Export Citation Format

Share Document