The new technology allows the laser linewidth to shrink to one ten-thousandth of its original size.

A team from Macquarie University in Australia has demonstrated a new technology that can compress the linewidth of lasers to about one-ten-thousandth of the original, from 10 megahertz to 1 kilohertz. This breakthrough has the potential to revolutionize fields such as quantum computing, atomic clocks, and gravitational wave detection. The related research has been published in the latest issue of the journal "APL Photonics".