Continuous-wave narrow-linewidth vacuum ultraviolet laser source

www.nature.com

Continuous-wave narrow-linewidth vacuum ultraviolet laser source

www.nature.com

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NatureEnglish · 20 days ago

Nature, Published online: 11 February 2026; doi:10.1038/s41586-026-10107-4

A continuous-wave narrow-linewidth vacuum ultraviolet laser generated using four-wave mixing in cadmium vapour is shown to improve linewidth by five orders of magnitude compared with previous single-frequency lasers below 190 nm.

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