Stabilization of femtosecond laser frequency combs with subhertz residual linewidths
- 14 May 2004
- journal article
- Published by Optica Publishing Group in Optics Letters
- Vol. 29 (10) , 1081-1083
- https://doi.org/10.1364/ol.29.001081
Abstract
We demonstrate that femtosecond laser frequency combs (FLFCs) can have a subhertz linewidth across their entire emission spectra when they are phase locked to a reference laser with a similarly narrow linewidth. Correspondingly, the coherence time of the comb components relative to the reference laser can be of the order of a few seconds. Thus we are able to detect high-contrast spectral interferograms at up to 10-s integration time between two FLFCs locked to a common optical reference.Keywords
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