Denoising preprocessing using novel wavelet threshold functions in laser-induced breakdown spectroscopy based on fiber laser

Abstract

Fiber lasers have great advantages in long-time operation and stable power, showing great potentials in laser-induced breakdown spectroscopy (LIBS) for industrial online diagnosis. However, too high repetition frequency of fiber...

Atomic spectrometry update: review of advances in the analysis of metals, chemicals and materials

“…An example of the papers that have used de-noising methodology was presented by Xu et al 42 These workers used a fibre-based LIBS system and a novel wavelet threshold functions method of de-noising to aid the determination of Cr, Mg and Mn in aluminium alloys. Fibre-lasers have the advantage of producing very stable power over long-time applications, but because they have a very high repetition frequency, they produce much more noise from bremsstrahlung and multi-ablation.…”