Abstract

A compact device for an optical frequency stability transfer based on a cavity referenced to a molecular transition at 1.5 μm is described. The setup is essentially fibered and uses commercial components: a tunable confocal cavity, extended cavity laser diodes, a distributed feedback laser (DFB) laser, and a ${\mathrm{H}}^{13}{\mathrm{C}}^{14}\mathrm{N}$ cell. The phenomena that limit the stability are carefully studied. It is shown that the short-term stability is limited by the spectral purity of sources and the long-term stability by the residual amplitude modulation inherent to our current setup. The stability transfer of the molecular reference over 7 nm is demonstrated at a level of ${10}^{-10}$ in relative value, limited by the detected molecular linewidth. Improvements to the device are studied, and it is shown that a stability transfer at a ${10}^{-12}$ level could be achieved.

© 2016 Optical Society of America

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