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Compact, low-power chip-scale atomic clock

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8 Author(s)
DeNatale, J.F. ; Teledyne Sci. Co., Thousand Oaks, CA ; Borwick, R.L. ; Tsai, C. ; Stupar, P.A.
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We have successfully demonstrated a compact atomic frequency standard, the Chip-Scale Atomic Clock (CSAC), which achieves aggressive reductions in size and power while preserving good short-term stability. The device, based on Coherent Population Trapping (CPT), achieved volume less than 1 cm3, power consumption below 30 mW, and an Allan Deviation less than 1 times 10-11 (1 hour). This device incorporated a novel dual-pass reflective optical configuration based on a microstructured dual focus optic. Compact, low-power control electronics were developed based on an injection-locked voltage controlled oscillator (VCO) circuit. This approach enabled the combined power consumption of the VCO and microcontroller-based control electronics to be kept below 15 mW.

Published in:

Position, Location and Navigation Symposium, 2008 IEEE/ION

Date of Conference:

5-8 May 2008

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