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21 November 2017 A compact, frequency stabilized laser head for space RB clocks and wavelength references
G. Mileti, C. Affolderbach
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Proceedings Volume 10568, International Conference on Space Optics — ICSO 2004; 1056818 (2017) https://doi.org/10.1117/12.2307986
Event: International Conference on Space Optics 2004, 2004, Toulouse, France
Abstract
We present our ongoing development of a compact (<1.5 liters) and high-performance (10-14 at 104 s) laser-pumped Rubidium clock for space applications like, e.g., satellite navigation systems (GALILEO). A compact laser head was developed that includes frequency stabilization of the pump light to a reference cell. Recent clock stability results obtained with this laser head reach 2⋅10-13 at 1000s, limited mainly by residual cell temperature coefficients and light shift effects. We discuss strategies to overcome these limitations and the relationship between the stabilities of the pump laser and the clock. Comparisons of the laser and clock frequency stabilities are presented for stabilization to both Doppler and sub-Doppler spectroscopy.
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G. Mileti and C. Affolderbach "A compact, frequency stabilized laser head for space RB clocks and wavelength references", Proc. SPIE 10568, International Conference on Space Optics — ICSO 2004, 1056818 (21 November 2017); https://doi.org/10.1117/12.2307986
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KEYWORDS
Clocks
Laser stabilization
Rubidium
Doppler effect
Lasers
Optical pumping
Absorption
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