Enhancement of the performance of a fiber-based frequency comb by referencing to an acetylene-stabilized fiber laser

We demonstrate a significant improvement in the performance of a fiber-based frequency comb when a GPS-disciplined Rb clock is replaced with an acetylene-stabilized laser as the frequency reference. We have developed a compact, maintenance-free acetylene-stabilized fiber laser with a sub-kHz short-t...

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Bibliographic Details
Published in:Optics express 2017-02, Vol.25 (3), p.2259-2269
Main Authors: Talvard, Thomas, Westergaard, Philip G, DePalatis, Michael V, Mortensen, Nicolai F, Drewsen, Michael, Gøth, Bjarke, Hald, Jan
Format: Article
Language:English
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Summary:We demonstrate a significant improvement in the performance of a fiber-based frequency comb when a GPS-disciplined Rb clock is replaced with an acetylene-stabilized laser as the frequency reference. We have developed a compact, maintenance-free acetylene-stabilized fiber laser with a sub-kHz short-term linewidth and an Allan deviation below 3×10 for integration times above 1 s. Switching the comb reference from the Rb clock to the acetylene-stabilized laser improves both comb tooth linewidth and Allan deviation by about two orders of magnitude. Furthermore, long-term measurements of the acetylene-stabilized laser frequency with reference to the GPS-disciplined clock indicate a potential relative frequency uncertainty of 2 × 10 .
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.25.002259