Analysis of ion doping profiles in Yb-doped fiber preforms using laser-induced breakdown spectroscopy

2016 ◽  
Vol 31 (2) ◽  
pp. 492-496 ◽  
Author(s):  
Jiaming Li ◽  
Lianbo Guo ◽  
Nan Zhao ◽  
Qimeng Chen ◽  
Baoye Wu ◽  
...  
Keyword(s):  
Median Filter ◽  
Laser Induced Breakdown Spectroscopy ◽  
Breakdown Spectroscopy ◽  
Ion Doping ◽  
Adaptive Median Filter ◽  
Laser Induced Breakdown ◽  
Doping Profiles ◽  
Fiber Preforms ◽  
Self Adaptive

This study describes ion doping profiling in Yb-doped fiber preforms using laser-induced breakdown spectroscopy assisted by a self-adaptive median filter.

scholarly journals Correction: Analysis of ion doping profiles in Yb-doped fiber preforms using laser-induced breakdown spectroscopy

2020 ◽  
Vol 35 (7) ◽  
pp. 1489-1489
Author(s):  
Jiaming Li ◽  
Lianbo Guo ◽  
Nan Zhao ◽  
Qimeng Chen ◽  
Baoye Wu ◽  
...  
Keyword(s):  
Laser Induced Breakdown Spectroscopy ◽  
Breakdown Spectroscopy ◽  
Ion Doping ◽  
Laser Induced Breakdown ◽  
Doping Profiles ◽  
Fiber Preforms

Correction for ‘Analysis of ion doping profiles in Yb-doped fiber preforms using laser-induced breakdown spectroscopy’ by Jiaming Li et al., J. Anal. At. Spectrom., 2016, 31, 492–496, DOI: 10.1039/C5JA00429B.

Online Compositional Analysis of Molten Steel by Laser-Induced Breakdown Spectroscopy

2013 ◽  
Vol 694-697 ◽  
pp. 1260-1266 ◽  
Author(s):  
Lan Xiang Sun ◽  
Yong Xin ◽  
Zhi Bo Cong ◽  
Yang Li ◽  
Li Feng Qi
Keyword(s):  
Molten Steel ◽  
Median Filter ◽  
Metallurgical Industry ◽  
Laser Induced Breakdown Spectroscopy ◽  
Online Analysis ◽  
Steel Temperature ◽  
Breakdown Spectroscopy ◽  
Line Intensities ◽  
Calibration Curves ◽  
Laser Induced Breakdown

Quick analysis of chemical composition is very important for process control and quality assessment in metallurgical industry, especially in steelmaking process. A prototype equipment for online analysis of molten steel composition was developed based on laser-induced breakdown spectroscopy. The effect of steel temperature on different spectral line intensities was studied, and calibration curves of Cr, Ni, Si and Mn were built. Results show that most line intensities are greatly enhanced when steel temperature is higher than 1200°C, and the detection capability of minor elements in molten steel is higher than in normal solid steel. Line intensity, however, is easier saturated in molten steel, leading to narrow linear ranges of calibration curves for molten steel. Furthermore, for online analysis, by using a median filter the abnormal points were inhibited and the changing compositional concentrations were successfully monitored.

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.

Characterization of Amethysts from Sukamara, Central Kalimantan, Using Laser-Induced Breakdown Spectroscopy (LIBS)

2020 ◽  
Vol 1 (2) ◽  
pp. 5-8
Author(s):  
Komang Gde Suastika, Heri Suyanto, Gunarjo, Sadiana, Darmaji
Keyword(s):  
Emission Intensity ◽  
Laser Energy ◽  
Emission Spectra ◽  
Atomic Emission ◽  
Laser Induced Breakdown Spectroscopy ◽  
Chemical Formula ◽  
Central Kalimantan ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown

Abstract - Laser-Induced Breakdown Spectroscopy (LIBS) is one method of atomic emission spectroscopy using laser ablation as an energy source. This method is used to characterize the type of amethysts that originally come from Sukamara, Central Kalimantan. The result of amethyst characterization can be used as a reference for claiming the natural wealth of the amethyst. The amethyst samples are directly taken from the amethyst mining field in the District Gem Amethyst and consist of four color variations: white, black, yellow, and purple. These samples were analyzed by LIBS, using laser energy of 120 mJ, delay time detection of 2 μs and accumulation of 3, with and without cleaning. The purpose of this study is to determine emission spectra characteristics, contained elements, and physical characteristics of each amethyst sample. The spectra show that the amethyst samples contain some elements such as Al, Ca, K, Fe, Gd, Ba, Si, Be, H, O, N, Cl and Pu with various emission intensities. The value of emission intensity corresponds to concentration of element in the sample. Hence, the characteristics of the amethysts are based on their concentration value. The element with the highest concentration in all samples is Si, which is related to the chemical formula of SiO2. The element with the lowest concentration in all samples is Ca that is found in black and yellow amethysts. The emission intensity of Fe element can distinguish between white, purple, and yellow amethyst. If Fe emission intensity is very low, it indicates yellow sample. Thus, we may conclude that LIBS is a method that can be used to characterize the amethyst samples.Key words: amethyst, impurity, laser-induced, breakdown spectroscopy, characteristic, gemstones

Sign in / Sign up

Export Citation Format

Share Document