Scientists working at SLAC have created the first atomic inner-shell X-ray laser at 1.46 nm pumped by the LCLS free electron laser. For further details please see the SLAC press release.

The Nature article on “Atomic inner-shell X-ray laser at 1.46 nanometres pumped by an X-ray free-electron laser” can be found on the Nature website.

Jon Marangos has provided his comments in an article “Laser science: Even harder X-rays”. The article can be found on the Nature website.