Accurate laser frequency locking to optical frequency combs under low-signal-to-noise-ratio conditions

We demonstrate a method for accurately locking the frequency of a continuous-wave laser to an optical frequency comb in conditions where the signal-to-noise ratio is low, too low to accommodate other methods. Our method is typically orders of magnitude more accurate than conventional wavemeters and...

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Bibliographic Details
Published in:arXiv.org 2020-03
Main Authors: Guo, C, Favier, M, Galland, N, Cambier, V, Álvarez-Martínez, H, Lours, M, De Sarlo, L, Andia, M, R Le Targat, Bize, S
Format: Article
Language:English
Subjects:
Continuous wave lasers
Dipoles
Frequency control
Frequency locking
Optical frequency
Optical lattices
Signal to noise ratio
Wavemeters
Online Access:Get full text
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Summary:We demonstrate a method for accurately locking the frequency of a continuous-wave laser to an optical frequency comb in conditions where the signal-to-noise ratio is low, too low to accommodate other methods. Our method is typically orders of magnitude more accurate than conventional wavemeters and can considerably extend the usable wavelength range of a given optical frequency comb. We illustrate our method by applying it to the frequency control of a dipole lattice trap for an optical lattice clock, a representative case where our method provides significantly better accuracy than other methods.
ISSN:2331-8422
DOI:10.48550/arxiv.2003.10510