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Compact diode-laser based rubidium frequency reference.

N Vukicevic1, A S Zibrov, L Hollberg

  • 1Time and Frequency Div., Nat. Inst. of Stand. and Technol., Boulder, CO.

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
|February 2, 2008
PubMed
Summary
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A new atomic vapor frequency reference using Raman scattering shows promise for compact, low-power, and acceleration-insensitive devices. Fractional frequency deviations below 5x10^-11 are achievable, advancing precision timing technology.

Area of Science:

  • Atomic, Molecular, and Optical Physics
  • Metrology and Scientific Instrumentation

Background:

  • Precision frequency standards are crucial for advanced technologies.
  • Existing atomic clocks can be bulky, power-hungry, or sensitive to environmental factors like acceleration.

Purpose of the Study:

  • To evaluate the performance of a simple microwave frequency reference utilizing Raman scattering in atomic vapor.
  • To explore design architectures for a compact, low-power, and acceleration-insensitive frequency standard.
  • To determine the feasibility of achieving high fractional frequency deviations.

Main Methods:

  • Experimental evaluation of a table-top microwave frequency reference.
  • Utilizing Raman scattering in an atomic vapor medium.
  • Analysis of various design architectures to identify optimal configurations.

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Main Results:

  • Demonstrated the potential for a compact and low-power frequency reference.
  • Showcased insensitivity to acceleration as a key design advantage.
  • Achieved fractional frequency deviations of less than or equal to 5x10^-11.

Conclusions:

  • The Raman scattering atomic vapor frequency reference is a viable candidate for next-generation timing systems.
  • Further development can lead to highly portable and robust precision frequency sources.
  • The experimental results validate the design principles for future compact systems.