Synthetic analysis about effect of GMAW arc to Nd:YAG laser transmitting

From the view of GMAW arc's absorption and refraction to Nd:YAG laser,the phenomena,which when Nd:YAG laser crosses GMAW arc,it's radius will decreases,was analyzed in this paper.The results show that if decreasing of Nd:YAG laser radius is due to absorption of GMAW arc totally,the absorptivity of pulse GMAW arc to Nd:YAG laser is 0.7%,and the absorptivity of short-circuiting GMAW arc is 2.0%.If this phenomena is attributed to refraction of GMAW arc overall,Nd:YAG laser beam is deflected 0.34% by pulse GMAW arc,and 1.02% by short-circuiting GMAW arc.But considering this phenomena form the view of welding,it can regard approximatively GMAW arc as no effect on Nd:YAG laser beam transmitting.