Processing characteristics of laser micro incising and possibility of its high speed processing

In order to clarify the processing characteristics of wood by UV laser and to improve the processing speed of laser micro incising, the influences of pulse repetition rate and pulse energy of the laser on processing efficiency were investigated. As a result, it was found that each parameter combined affects the processing efficiency and processing form of wood. Based on the optimum processing conditions obtained there, two processing methods, dispersed irradiation method and concentrated irradiation method, were proposed for the laser micro incising. The dispersed irradiation method was considered to be suitable for conditions with high incision density. On the other hand, the concentrated irradiation method was considered to be suitable for cases where absolute hole depth is required or conditions with relatively low incision density. By selecting the processing method appropriately, a possibility of improving the processing speed was found.