Testing ultrafast mode-locking at microhertz relative optical linewidth
Optics
2009-11-13 v2
Abstract
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 result is at least two orders of magnitude below recent predictions for quantum-limited individual comb-mode linewidths, verifying that the mode-locking mechanism strongly correlates quantum noise across the comb spectrum.
Cite
@article{arxiv.0810.4638,
title = {Testing ultrafast mode-locking at microhertz relative optical linewidth},
author = {Michael J. Martin and Seth M. Foreman and T. R. Schibli and Jun Ye},
journal= {arXiv preprint arXiv:0810.4638},
year = {2009}
}
Comments
Expanded discussion to include correlated noise terms, made minor formatting changes, added a reference, and fixed typographical errors. 10 pages, 5 figures