Diamond mirrors for high-powered lasers

https://phys.org/news/2022-05-diamond-mirrors-high-powered-lasers

"10-kilowatt laser focused down into a 750-micron spot on a 3-by-3-millimeter diamond, which is a lot of energy focused down on a very small spot, and we didn't burn it," said Atikian. "This is important because as laser systems become more and more power hungry, you need to come up with creative ways to make the optical components more robust"