Researchers from the University of Twente's MESA+ Institute for Nanotechnology and chipmaking company LioniX International (both in Enschede, Netherlands) have developed the world's most-narrowband laser diode on a chip.

The tunable indium phosphide/silicon nitride (InP-Si3N4) hybrid integrated-photonics laser has an intrinsic laser linewidth of only 290 Hz and a spectral coverage of 81 nm at 1550 nm.

Read more at http://www.laserfocusworld.com/articles/2017/07/integrated-photonics-laser-has-record-narrow-chip-based-linewidth-of-290-hz.html

and https://www.utwente.nl/en/news/!/2017/7/54645/university-of-twente-develops-record-laser-on-chip

Author: AOLab
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