Testing ultrafast mode-locking at microhertz relative optical linewidth

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Martin, Michael J.; Foreman, Seth M.; Schibli, T. R.; Ye, Jun;

We report new limits on the phase coherence of the ultrafast mode-locking process in an octave-spanning Ti:sapphire comb. We find that the mode-locking mechanism correlates optical phase across a full optical octave with less than 2.5 micro Hz relative linewidth. This r... View more
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