Open AccessSingle-frequency mid-infrared waveguide laser
Author(s) -
Philippe Guay,
Jérôme Genest,
Vincent Michaud-Belleau,
Nicolas Bourbeau Hébert,
David G. Lancaster
Publication year - 2019
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.27.033737
Subject(s) - laser linewidth , optics , laser , longitudinal mode , coherence (philosophical gambling strategy) , single mode optical fiber , heterodyne detection , heterodyne (poetry) , chip , materials science , coherence length , waveguide , physics , optoelectronics , telecommunications , acoustics , superconductivity , quantum mechanics , computer science
A guided-wave chip laser operating in a single longitudinal mode at 2860 nm is presented. The cavity was set in the Littman-Metcalf configuration to achieve single-frequency operation with a side-mode suppression ratio above 33 dB. The chip laser's 2 MHz linewidth on a 10 ms scale was found to be limited by mechanical fluctuations, but its Lorentzian contribution was estimated to be lower than 1 Hz using a heterodyne technique. This demonstration incorporates a high coherence source with the simplicity provided by the compactness of chip lasers.