%0 Journal Article
%A Ulanov, Alexander E.
%A Wildi, Thibault
%A Bhatnagar, Utkarsh
%A Herr, Tobias
%T Laser diode self-injection locking to an integrated high-Q Fabry–Perot microresonator
%J Optics letters
%V 49
%N 21
%@ 0146-9592
%C Washington, DC
%I Soc.
%M PUBDB-2024-05510
%P 6261
%D 2024
%X Self-injection locking (SIL) of laser diodes to microresonators is a powerful technique that enables compact narrow-linewidth lasers. Here, we extend this technique to chip-integrated Fabry–Perot (FP) microresonators, which offer high-quality factors and large mode volumes in a compact footprint, reducing fundamental thermorefractive noise (TRN). The resonators consist of a silicon nitride waveguide terminated by two photonic crystal reflectors fabricated via scalable ultraviolet lithography. Evanescent side-coupling allows precise tuning of the SIL feedback mechanism. We present a theoretical model and experimentally demonstrate SIL, resulting in a fundamental thermorefractive-noise-limited laser. The experiments and the theoretical model are in excellent agreement. These results complement current SIL techniques and are relevant to chip-scale low-noise laser systems.
%F PUB:(DE-HGF)16
%9 Journal Article
%$ pmid:39485462
%U <Go to ISI:>//WOS:001379623800003
%R 10.1364/OL.539725
%U https://bib-pubdb1.desy.de/record/613004