• Question: how much energy does laser give out?

    Asked by ishy05 to Philip on 20 Jun 2011.
    • Photo: Philip Dolan

      Philip Dolan answered on 20 Jun 2011:

      Lasers can give out varying amounts of energy, depending on what kind they are. Some of the worlds most powerful lasers are used in nuclear fusion experiments (in fact they use loads, 92 or so and shoot them all at the same spot!) and I think the US Navy has managed to build a laser they shoot at other ships, and that one’s pretty powerful. Sometimes what you want is a very very short pulse of laser power too, and that’s an active area of research.