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22 January 2007 Long-term stability of NIST chip-scale atomic clock physics packages
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We discuss the long-term stability of the NIST chip-scale atomic clock (CSAC) physics packages. We identify the major factors that currently limit the frequency stability of our CSAC packages after 100 s. The requirements for the stability of the vapor cell and laser temperature, local magnetic field, and local oscillator output power are evaluated. Due to the small size of CSAC physics package assemblies, advances MEMS packaging techniques for vacuum sealing and thermal isolation can be used to achieve the temperature stability goals. We discuss various ideas on how to aid temperature control solutions over wide variations in ambient temperature by implementing atom-based stabilization schemes. Control of environment-related frequency instabilities will be critical for successful insertion of CSACs into portable instruments in the areas of navigation and communication.
© (2007) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
S. Knappe, V. Gerginov, V. Shah, A. Brannon, L. Hollberg, and J. Kitching "Long-term stability of NIST chip-scale atomic clock physics packages", Proc. SPIE 6466, MOEMS and Miniaturized Systems VI, 64660O (22 January 2007);


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