A Review on Laser Marking Process for Different Materials

this paper describes a variety of fundamental research of laser marking of different materials which the authors have recently performed. Product laser marking is one of the most common industrial applications of lasers. The laser marking systems using different lasers and optical delivery systems may be used to mark an almost endless list of materials including metals, plastics, ceramics, glass, woodland leather as well as painted surfaces and photographic emulsions. In this review the research and progress in laser marking of different materials are critically reviewed from different perspectives. Basically many types of industrial lasers like, carbon dioxide (CO2) laser and neodymium-doped yttrium aluminium garnet (Nd: YAG) laser, fiber laser, semiconductor laser which are used for laser marking process. Some important laser processing parameters and their effects on MRR and surface roughness are discussed. This paper deals with the review of papers by authors.