 FACT: Riddled with inaccuracies with respect to lasers. A diamond is  a pure carbon crystal, with little impurities. The gems (such as  manufactured rubies) used as mediums in lasers work because of the  impurities in them. Not to mention the medium of a laser couldnt be  inserted into a laser as shown. Also, there is no way that kind of  output couldve been achieved using only a backpack