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Joint Conference of the European Frequency and Time Forum and IEEE International Frequency Control Symposium (EFTF/IFCS)

Compact diode-laser based rubidium frequency reference

N. Vukičević, Alexander S. Zibrov, Leo W. Hollberg, Fred L. Walls, John E. Kitching, H. G. Robinson

Published Jan 22, 2003• 4 citations
Publisher

Abstract

The performance of a simple microwave frequency reference based on Raman scattering in an atomic vapor is examined. This reference has the potential to be compact, low-power, and insensitive to acceleration. Several design architectures have been evaluated with a table-top experiment in order to guide the future development of a compact system. Fractional frequency deviations of /spl les/5/spl times/10/sup -11/ appear to be feasible.

DOI
10.1109/freq.1999.840726

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The performance of a simple microwave frequency reference based on Raman scattering in an atomic vapor is examined. This reference has the potential to be compact, low-power, and insensitive to acceleration. Several design architectures have been evaluated with a table-top experiment in order to guide the future development of a compact system. Fractional frequency deviations of /spl les/5/spl times/10/sup -11/ appear to be feasible.
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We report on our latest progress on the ongoing development of a compact optical frequency reference for CubeSat missions in LEO. This reference will be based on Doppler free laser spectroscopy of rubidium vapor. Our simplified solution is based on frequency modulation spectroscopy using a customized, shielded 5 mm long vapor cell and a monolithic distributed feedback (DFB) laser diode on a mesoscopic breadboard setup. The electro-optical system features miniaturized optics as well as a polarization maintaining fiber coupling inside a housing with dimensions of 70 mm × 26 mm × 19 mm (38 cm³). The latter will be installed on a 90 mm × 80mm electronics board for full functionality of the system. This way, our reference constitutes a key technology for future compact, simple and robust atomic quantum technologies for nanosatellite applications.