Feed-forward Drift Compensation and Dynamic Allan Deviation of Lasers Locked to 200 mm Fabry-Perot Cavities

Le résumé fourni par la source

We characterize the cavity-induced frequency drift of three continuous wave lasers stabilized to Fabry-Perot cavities by locking each laser to an optical frequency comb. The carrier-envelope-offset frequency signal of each optical frequency comb was locked to a 10 MHz oscillator stabilized to UTC(APL) to provide a stable frequency reference. We demonstrate that feed-forward drift compensation is an effective method of canceling the linear frequency drift of the cavities in real time, resulting in an Allan deviation for all three lasers at or below 1 × 10−15 for averaging times between 0.2 and 300 seconds. Dynamic Allan deviation analysis further identifies system limitations and provides additional diagnostics for evaluating system performance.

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