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Short and intense Iaser pulse can process the surface and the inside oftransparent materials by focusing the pulse at desired position. Processing ofsuch a transparent material is considered to be app]icable to a lot of practica] applications. Details of such process are, however, still unclear and are subjects of fhrther investigations. Here we report on dynamical observation about interaction of fundarnental radiation (1064nm) of the Q-switched Nd:YAG laser to the surface of PMMA obseryed bydoi:10.1299/jsmelem.2003.855 fatcat:2lxrhzfyzbdcroebgxdlb3muzu