# Dual-Frequency Laser at 1.5 $\mu$ m for Optical Distribution and Generation of High-Purity Microwave Signals

@article{Pillet2008DualFrequencyLA,
title={Dual-Frequency Laser at 1.5 \$\mu\$ m for Optical Distribution and Generation of High-Purity Microwave Signals},
author={Grex0301goire Pillet and Loix0308c Morvan and Marc Brunel and Fabien Bretenaker and Daniel Dolfi and Marc Vallet and J.-P. Huignard and Albert Le Floch},
journal={Journal of Lightwave Technology},
year={2008},
volume={26},
pages={2764-2773}
}
We describe the stabilization of the beatnote of an Er,Yb:glass dual-frequency laser at 1.5 mum with and without an external microwave reference. In the first case, a classical optical phase-locked loop (OPLL) is used, and absolute phase noise levels as low as -117 dBrad2/Hz at 10 kHz from the carrier are reported. In the second case one or two fiber-optic delay lines are used to lock the frequency of the beatnote. Absolute phase noise levels as low as -107 dBrad2/Hz at 10 kHz from the carrier… CONTINUE READING

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