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Enlarged Plasma Ablations In Microwave-Enhanced Laser-Induced Breakdown Spectroscopy With Coaxial Multifiber Arrays

Yuji Ikeda, Joey Kim Soriano

i-Lab. Inc., Kobe, Japan


This study comprises a comprehensive investigation of the enhancement of laser-induced breakdown spectroscopy (LIBS) using multifiber array configurations and microwave (MW) enhancement. We demonstrated a significant increase in both the emission intensity and Signal-to-Noise Ratio (SNR) through the integration of a six-multifiber setup, resulting in a six-fold increase in broadband emissions. The introduction of MW further augmented this enhancement, exhibiting a two to three orders of magnitude increase in emissions. Remarkably, the combined approach of multifiber LIBS and MW enhancement resulted in a dramatic 2000-time improvement in emission signals. Concurrently, the SNR was enhanced by two to three orders of magnitude. These advancements have opened new avenues for expanding the limits of detection in analytical applications, which is the focus of our ongoing investigation. Our findings have significant implications for various industries including environmental monitoring, materials science, and biomedical research.

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