Improvement of Beam Shape Modification on Stability of Laser Induced Breakdown Spectroscopy

Wavefront-enhanced laser-induced breakdown spectroscopy (WELIBS) utilizing a crystalline silicon wafer for a flat-top IR laser beam

“…23 Furthermore, Jia et al investigated Gaussian and flat-top lasers for pure copper spectral stability and found that using a flat-top laser improved spectral stability. 24 Recently, wavefront shaping of the laser beam to obtain a flat-top beam profile instead of a quasi-Gaussian one has improved the spectroscopic analysis in laser-induced fluorescence experiments. 25 An adaptive optics system has been utilized for beam shaping in such experiments.…”