Footage circulating in Russian pro-military channels this week shows what is claimed to be a Russian laser weapon system engaging aerial drones, according to a Russian military blogger who described the video as an "exclusive." The blogger's post claimed several
They have been looking into reflecting lasers since the Cold War. Even if you get 99.999% reflectivity, that only gives you a tiny window of time against modern lasers before the coating just goes poof thanks to tiny imperfections becoming hotspots
It’s specially unviable for drones since most drones are supposed to be as cheap as you can make them. And it wouldn’t protect stuff like cameras and sensors.