Accurate laser frequency locking to optical frequency combs under low-signal-to-noise-ratio conditions
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 can considerably extend the usable …