I hear that the Army is developing a laser weapon to take out drones. It makes sense. The problem with laser weapons against manned aircraft is that the mass of the airframe is so great that to achieve a damaging temperature rise with a distant laser is extremely difficult. With the much lower mass of the drone, not so much.
If I’m the enemy, I might try to put corner reflectors on the drone, but I think all that does is stress the dynamic range of the tracking sensor and reduce the payload of the drone. I can switch in attenuators (sun glasses) and keep on burning.
Lockheed to deliver a 60 kW laser weapon to the U.S. Army in April.
http://www.janes.com/article/68745/us-army-to-trial-60-kw-laser-for-vehicle-mounted-air-defence
http://www.nationaldefensemagazine.org/blog/Lists/Posts/Post.aspx?ID=2447