Black holes created from energy are called Kugelblitz black holes [1]. The article correctly points out the difficulty of doing so with traditional lasers. But

Black holes created from energy are called Kugelblitz black holes [1]. The article correctly points out the difficulty of doing so with traditional lasers. But if we can ever figure out a way to reflect (and thus lase) gamma rays (or some other much higher energy radiation) this then becomes possible. Of course we don't even have a plausible theory on how we might construct "grasers" [2]. [1]: https://en.wikipedia.org/wiki/Kugelblitz_(astrophysics) https://en.wikipedia.org/wiki/Kugelblitz_(astrophysics) [2]: https://en.wikipedia.org/wiki/Gamma-ray_laser https://en.wikipedia.org/wiki/Gamma-ray_laser