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has been cited by the following article:

• TITLE: Monitoring the Laser Ablation Process of Paint Layers by PILA Technique

  AUTHORS: Angel Eduardo Villarreal-Villela, L. Ponce Cabrera

  KEYWORDS: Laser Induced Breakdown Spectroscopy, Pulsed Laser, Nd:YAG, Acousto-Optical Signal Processing

  JOURNAL NAME: Open Journal of Applied Sciences, Vol.6 No.9, September 23, 2016

  ABSTRACT: The spectrum analysis obtained by Fast Fourier Transform of the Photoacoustic In-duced by Laser Ablation (PILA) during laser assisted paints removal process is de-scribed, in order to identify the presence of paint components on a metallic surface, optimize the ablation rate and propose the method as a cleaning process monitoring. The process was carried out using a low-cost experimental setup which includes a burst-mode Nd:YAG laser, an electret microphone, an audio amplifier device and an oscilloscope, to record the acoustic pulse and analyze it. The samples surface mor-phology was characterized by Optical Microscopy and Optical Coherence Tomography (OCT) before and after irradiation to visualize the formation of craters. As additional monitoring technique, the Laser Induced Breakdown Spectroscopy (LIBS) was used. The potential of the analysis for qualitative monitoring of coating removal was demonstrated due to the coincidence of the information provided by LIBS and PILA techniques.