Optimally enhanced optical emission in laser-induced breakdown spectroscopy by combining spatial confinement and dual-pulse irradiation

Guo, Lianbo; Zhang, B. Y.; He, Xiao‐Ting; Li, C. M.; Zhou, Yuting; Wu, Tao; Park, J. B.; Zeng, Xiaoyan; Lu, Yongfeng

doi:10.1364/oe.20.001436

Cited by 65 publications

(27 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, one of the major drawbacks of LIBS is its low detection sensitivity in determining trace elements. To enhance the LIBS sensitivity, various approaches have been proposed to improve the analytical performance of the technique, such as controlling the atmosphere, multiple pulse excitation, introduction of inert gas [12][13][14][15], and spectra normalization [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Accuracy improvement of quantitative analysis by spatial confinement in laser-induced breakdown spectroscopy

Guo¹,

Hao²,

Shen³

et al. 2013

Opt. Express

View full text Add to dashboard Cite

show abstract

Section: Introductionmentioning

confidence: 99%

Accuracy improvement of quantitative analysis by spatial confinement in laser-induced breakdown spectroscopy

Guo¹,

Hao²,

Shen³

et al. 2013

Opt. Express

View full text Add to dashboard Cite

show abstract

“…In spite of the increasing popularity of LIBS, the processes involved in the laser-induced plasma formation, ablation, atomization, and excitation are complex and difficult to reproduce, leading to poor sensitivity, precision, and detection limits313233 compared to other forms of atomic spectroscopy such as inductively coupled plasma atomic emission spectroscopy (ICP-AES) or flame atomic emission spectroscopy. In order to improve the overall performance of LIBS, a significant amount of research to enhance the intensity of plasma emission based on combining different analytical techniques were investigated by different groups.…”

mentioning

confidence: 99%

Laser Induced Breakdown Spectroscopy Based on Single Beam Splitting and Geometric Configuration for Effective Signal Enhancement

Yang¹,

Lin

Ding

et al. 2015

Sci Rep

View full text Add to dashboard Cite

A new laser induced breakdown spectroscopy (LIBS) based on single-beam-splitting (SBS) and proper optical geometric configuration has been initially explored in this work for effective signal enhancement. In order to improve the interaction efficiency of laser energy with the ablated material, a laser beam operated in pulse mode was divided into two streams to ablate/excite the target sample in different directions instead of the conventional one beam excitation in single pulse LIBS (SP-LIBS). In spatial configuration, the laser beam geometry plays an important role in the emission signal enhancement. Thus, an adjustable geometric configuration with variable incident angle between the two splitted laser beams was constructed for achieving maximum signal enhancement. With the optimized angles of 60° and 70° for Al and Cu atomic emission lines at 396.15 nm and 324.75 nm respectively, about 5.6- and 4.8-folds signal enhancements were achieved for aluminum alloy and copper alloy samples compared to SP-LIBS. Furthermore, the temporal analysis, in which the intensity of atomic lines in SP-LIBS decayed at least ten times faster than the SBS-LIBS, proved that the energy coupling efficiency of SBS-LIBS was significantly higher than that of SP-LIBS.

show abstract

“…However, the high detection limit of elements has always been a difficult problem to restrict the application of LIBS [ 18 ]. Therefore, LIBS signal enhancement technologies have become the focus of scholars at home and abroad, mainly including double pulse LIBS [ 19 , 20 , 21 ], nanoparticle enhanced LIBS [ 22 , 23 ], spatial-confinement LIBS [ 24 , 25 ], resonance-enhanced LIBS [ 26 , 27 ], and so on. Besides, the signal enhancement technique based on argon (Ar) is also one of the most promising techniques for signal enhancement.…”

Section: Introductionmentioning

confidence: 99%

Quantitative Determination of Cd in Soil Using Laser-Induced Breakdown Spectroscopy in Air and Ar Conditions

Liu

Huang

et al. 2018

Molecules

View full text Add to dashboard Cite

Rapid detection of Cd content in soil is beneficial to the prevention of soil heavy metal pollution. In this study, we aimed at exploring the rapid quantitative detection ability of laser- induced breakdown spectroscopy (LIBS) under the conditions of air and Ar for Cd in soil, and finding a fast and accurate method for quantitative detection of heavy metal elements in soil. Spectral intensity of Cd and system performance under air and Ar conditions were analyzed and compared. The univariate model and multivariate models of partial least-squares regression (PLSR) and least-squares support vector machine (LS-SVM) of Cd under the air and Ar conditions were built, and the LS-SVM model under the Ar condition obtained the best performance. In addition, the principle of influence of Ar on LIBS detection was investigated by analyzing the three-dimensional profile of the ablation crater. The overall results indicated that LIBS combined with LS-SVM under the Ar condition could be a useful tool for the accurate quantitative detection of Cd in soil and could provide reference for environmental monitoring.

show abstract

Optimally enhanced optical emission in laser-induced breakdown spectroscopy by combining spatial confinement and dual-pulse irradiation

Cited by 65 publications

References 31 publications

Accuracy improvement of quantitative analysis by spatial confinement in laser-induced breakdown spectroscopy

Accuracy improvement of quantitative analysis by spatial confinement in laser-induced breakdown spectroscopy

Laser Induced Breakdown Spectroscopy Based on Single Beam Splitting and Geometric Configuration for Effective Signal Enhancement

Quantitative Determination of Cd in Soil Using Laser-Induced Breakdown Spectroscopy in Air and Ar Conditions

Contact Info

Product

Resources

About