Wireless charging via laser is actually pretty good, I wasn't sure how far along it was but from the paper it seems like it would work. Much better than microwave charging due to being able to tightly beam the laser and having 0 RF noise. Lasers can also be used to communicate, or even have the power laser be modulated to provide datalink as well.Or if the drone can be wirelessly charged, i.e. keeping the drone hovering by continuously beaming a laser beam at it.
Might be slightly far-fetched at present, though.
Chinese scientists are doing very well in free space optical communications.