When certain atoms are irradiated with laser light, they can produce a very different kind of laser light: laser pulses with extremely high frequencies in the X-ray range. These laser pulses, which helped achieve record-breaking results at TU Wien in the 1990s, were the subject of the 2023 Nobel...
Source: [Phys.org](https://phys.org/news/2026-08-rays-nobel-prize-limit.html)