Self-corrected chip-based dual-comb spectrometer
Date
2017
Authors
Hébert, N.B.
Genest, J.
Deschênes, J.D.
Bergeron, H.
Chen, G.Y.
Khurmi, C.
Lancaster, D.G.
Editors
Advisors
Journal Title
Journal ISSN
Volume Title
Type:
Journal article
Citation
Optics Express, 2017; 25(7):8168-8179
Statement of Responsibility
Nicolas Bourbeau Hébert, Jérôme Genest, Jean-Daniel Deschênes, Hugo Bergeron, George Y. Chen, Champak Khurmi, and David G. Lancaster
Conference Name
Abstract
We present a dual-comb spectrometer based on two passively mode-locked waveguide lasers integrated in a single Er-doped ZBLAN chip. This original design yields two free-running frequency combs having a high level of mutual stability. We developed in parallel a self-correction algorithm that compensates residual relative fluctuations and yields mode-resolved spectra without the help of any reference laser or control system. Fluctuations are extracted directly from the interferograms using the concept of ambiguity function, which leads to a significant simplification of the instrument that will greatly ease its widespread adoption and commercial deployment. Comparison with a correction algorithm relying on a single-frequency laser indicates discrepancies of only 50 attoseconds on optical timings. The capacities of this instrument are finally demonstrated with the acquisition of a high-resolution molecular spectrum covering 20 nm. This new chip-based multi-laser platform is ideal for the development of high-repetition-rate, compact and fieldable comb spectrometers in the near- and mid-infrared.
School/Discipline
Dissertation Note
Provenance
Description
Published 30 Mar 2017
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Rights
© 2017 Optical Society of America