Optodynamic monitoring of laser tattoo removal

The goal of this research is to use the information contained in the mechanisms occurring during laser tattoo removal process. We employed a fast laser beam deflection probe (BDP) to measure the cracking sound that originates from the dye explosions in the process known as selective photothermolysis. The experiments were performed in vitro (skin phantoms), ex vivo (marking tattoos on pig skin) and in vivo (professional and amateur decorative tattoos on several patients). The signal includes the information about the energy released during the interaction, specific for different skin and tattoo conditions.