Plasma modulation using beam shaping to improve signal quality for laser induced breakdown spectroscopy

Abstract

Modulating the laser induced plasma and improving the signal quality of LIBS by beam shaping.

A spectral standardization method based on plasma image-spectrum fusion to improve the stability of laser-induced breakdown spectroscopy

“…This modification reduced the relative standard deviation (RSD) of the Mg I 285.21 nm line in an aluminum magnesium alloy from 33% to 18%. 15 However, these methods require complex equipment and have restricted stability improvements. Consequently, researchers initiate their investigation by analyzing the data and subsequently refining the obtained spectra to enhance their reliability and consistency.…”

Spectral stability improvement through wide fields of view collection optics in laser-induced breakdown spectroscopy applications

“…[1][2][3][4][5] However, the limited measurement repeatability of the system hinders its quantitative analytical performance. Various methods have been developed to improve spectral stability, such as beam shaping, 6 optimization of laser focusing optics, [7][8][9][10] plasma image assistance, 11 algorithm correction, 12,13 etc.…”

High spectral stability and quantitative accuracy of LIBS by optimization of a combined atomic and ionic line algorithm

“…The first one is to improve the experimental equipment or environment. For example, Hou et al 12 improved the LIBS signal quality by shaping the laser beam from a commonly used Gaussian profile to a flat-top profile. Yao et al 13 reported that aberration diminished focusing shrunk the laser focal region, leading to fewer plasma position fluctuations and higher signal repeatability.…”