Frequency comparison of two fiber-based frequency combs at 633 nm

Conference Paper · July 2008with2 Reads
DOI: 10.1109/CPEM.2008.4574776 · Source: IEEE Xplore
Conference: Precision Electromagnetic Measurements Digest, 2008. CPEM 2008. Conference on


    Two fiber-based frequency combs were compared at 633 nm. An offset laser was locked to a frequency comb, and the locked laser was measured with another comb. Consequently, the frequency uncertainty of the combs was less than 3 times 10<sup>-16</sup> at 10 000 s averaging, which is sufficiently lower than the uncertainty of UTC.