Laser cutting profile characterization using dynamic speckle method

摘要

Dynamic speckle method was employed to characterize the profile quality of the aluminum plate in process of laser cutting. Speckle contrast as an indicator was used to study the relation of the distance between the focusing lens and the sample and the focus length. Experimental results show that this method is effective to characterise the laser cutting profile quality. With the laser technology development, many laser systems were used in industrial productions, such as laser cutting, drilling, and welding and so on. In laser cutting, the cutting profile quality is very important, and usually decides the working parameters