Beyond Darth Vader

Ray Faulk, Laser Engineer, Harper Corp. of America, explained that the YAG's shorter beam length engraves smaller cells than does the CO2 laser. "Basically speaking, the CO2 engravings are limited to about 1,500 cells per inch (lpi), whereas the YAG engravings have recently topped at 2,500 lpi." And these higher line counts are becoming increasingly important.