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Related Experiment Video

Updated: Jun 23, 2026

Measurement and Analysis of Atomic Hydrogen and Diatomic Molecular AlO, C2, CN, and TiO Spectra Following Laser-induced Optical Breakdown

Measurement and Analysis of Atomic Hydrogen and Diatomic Molecular AlO, C₂, CN, and TiO Spectra Following Laser-induced Optical Breakdown

Published on: February 14, 2014

Polarization-resolved laser-induced breakdown spectroscopy.

Youbo Zhao¹, Sima Singha, Yaoming Liu

¹Department of Chemistry, University of Illinois, Chicago, Illinois 60607-7061, USA.

|April 18, 2009

Summary

This summary is machine-generated.

Plasma polarization measurements enhance laser-induced breakdown spectroscopy (LIBS) sensitivity by suppressing background light. This method improves detection of elements like copper and carbon in samples.

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Published on: September 23, 2013

Area of Science:

Atomic Spectroscopy
Plasma Physics
Laser-Matter Interaction

Background:

Laser-induced breakdown spectroscopy (LIBS) is a powerful analytical technique.
Continuum emission from plasma can interfere with the detection of discrete spectral lines, limiting sensitivity.
Femtosecond laser pulses offer precise material ablation for LIBS analysis.

Purpose of the Study:

To investigate the use of plasma polarization measurements for enhancing LIBS sensitivity.
To develop a method for suppressing continuum emission while preserving spectral line intensity.
To demonstrate the effectiveness of the technique for elemental analysis of copper and carbon.

Main Methods:

Utilized plasma polarization measurements to analyze emission from laser-induced plasmas.
Employed femtosecond laser pulses for ablation of copper and carbon samples.
Measured the polarization characteristics of both continuum and discrete spectral emissions.

Main Results:

Plasma polarization measurements effectively suppressed the broadband continuum emission.
The proposed method achieved this suppression with only minimal attenuation of discrete atomic and ionic spectra.
Demonstrated successful LIBS detection of copper and carbon using this polarization-based approach.

Conclusions:

Plasma polarization is a viable strategy to enhance LIBS sensitivity.
The technique offers a significant improvement in signal-to-background ratio for elemental analysis.
This method holds promise for more sensitive LIBS applications, particularly with femtosecond laser ablation.