Lasers used for cleaning have high power and high beam quality values, resulting in larger spot diameters and a deep depth of focus. Until recently, laser cleaning has been limited in application, yet videos of handheld laser cleaning systems generate millions of hits on the Internet. Therefore, laser cleaning is advancing and companies such as Blueacre Technology are now implementing similar principles used in medical device and semiconductor processing, where the laser process is supplemented with ancillary processes to increase process yield and reduce overall production costs. At its most basic, laser cleaning is a process in which optical radiation is directed to a part to remove unwanted material from the surface. The surface contamination tends to be rust on steel, oxide layers on aluminum prior to welding, and coatings such as paint. As shown in FIGURE 1, laser cleaning is very efficient at surface layer removal. Lasers used for cleaning have high power and high beam quality (M2) values, resulting in larger spot diameters and a deep depth of focus. Therefore, lasers can clean parts with multiple surfaces, each of which may be at a significantly different focal depth. Dep...