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A confocal-controlled Raman-LIBS hybrid microscope with high stability and spatial resolution

A confocal-controlled Raman-LIBS hybrid microscope with high stability and spatial resolution Probing elemental and molecular structural information with a high spatial resolution is a key bottleneck in determining unknown minerals in the fields of geology and space exploration. An untraditional confocal-controlled Raman-LIBS hybrid method with high spatial resolution and anti-drift properties has been developed to overcome this challenge. The method is the first to combine Rayleigh/reflected light, LIBS signal, and Raman spectrum to simultaneously measure geometrical topography and elemental and molecular structural information. The hybrid system utilizes real-time focus tracking the performance of Rayleigh/reflected light to achieve accurate spectral measurements. The axial-focusing resolution and lateral resolution for morphological imaging are improved to 15 nm and 600 nm, which improves the anti-drift capability and minimizes the laser ablation size, thereby achieving a high transverse resolution of 9 m, and a high axial resolution of 10 m. As a proof of concept, high-resolution topological and hybrid spectral maps of the Northwest Africa 13323 meteorite have been measured. The fusion of the LIBS and Raman data provides a detailed three-dimensional map of the elementary and compositional distributions of the meteorite. Further analysis of the D and G bands in the Raman map reveals structural information reflecting the thermal metamorphism of the meteorite. The proposed Raman-LIBS hybrid microscope provides valuable information for composition and structure analysis, and it is a powerful tool for studying unknown minerals in the fields of geology and space exploration. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Analytical Atomic Spectroscopy Royal Society of Chemistry

A confocal-controlled Raman-LIBS hybrid microscope with high stability and spatial resolution

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References (47)

Publisher
Royal Society of Chemistry
Copyright
This journal is © The Royal Society of Chemistry
ISSN
0267-9477
eISSN
1364-5544
DOI
10.1039/d2ja00360k
Publisher site
See Article on Publisher Site

Abstract

Probing elemental and molecular structural information with a high spatial resolution is a key bottleneck in determining unknown minerals in the fields of geology and space exploration. An untraditional confocal-controlled Raman-LIBS hybrid method with high spatial resolution and anti-drift properties has been developed to overcome this challenge. The method is the first to combine Rayleigh/reflected light, LIBS signal, and Raman spectrum to simultaneously measure geometrical topography and elemental and molecular structural information. The hybrid system utilizes real-time focus tracking the performance of Rayleigh/reflected light to achieve accurate spectral measurements. The axial-focusing resolution and lateral resolution for morphological imaging are improved to 15 nm and 600 nm, which improves the anti-drift capability and minimizes the laser ablation size, thereby achieving a high transverse resolution of 9 m, and a high axial resolution of 10 m. As a proof of concept, high-resolution topological and hybrid spectral maps of the Northwest Africa 13323 meteorite have been measured. The fusion of the LIBS and Raman data provides a detailed three-dimensional map of the elementary and compositional distributions of the meteorite. Further analysis of the D and G bands in the Raman map reveals structural information reflecting the thermal metamorphism of the meteorite. The proposed Raman-LIBS hybrid microscope provides valuable information for composition and structure analysis, and it is a powerful tool for studying unknown minerals in the fields of geology and space exploration.

Journal

Journal of Analytical Atomic Spectroscopy – Royal Society of Chemistry

Published: Mar 17, 2023

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