1210.3713 (Bruno Chanteau et al.)

Mid-IR frequency measurement using an optical frequency comb and a
long-distance remote frequency reference    [PDF]

Bruno Chanteau, Olivier Lopez, Wei Zhang, Giorgio Santarelli, Yann Le Coq, Frédéric Auguste, Benoît Darquié, Christian Chardonnet, Anne Amy-Klein

We have built a frequency chain which enables to measure the absolute frequency of a laser emitting in the 28-31 THz frequency range and stabilized onto a molecular absorption line. The set-up uses an optical frequency comb and an ultrastable 1.55 $\mu$m frequency reference signal, transferred from LNE-SYRTE to LPL through an optical link. We are now progressing towards the stabilization of the mid-IR laser via the frequency comb and the extension of this technique to quantum cascade lasers. Such a development is very challenging for ultrahigh resolution molecular spectroscopy and fundamental tests of physics with molecules.

View original: http://arxiv.org/abs/1210.3713