http://www.photonics.com/Article.aspx?AID=52628
"The device cut through a 15-mm-thick steel girder at a range of 1000 m, shot down several diving target unmanned aerial vehicles at a range of 2 km flying more than 50 m/s, and engaged an 82-mm-diameter steel ball representing a mortar round and traveling approximately 50 m/s. "