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Electronics for the pulsed rubidium clock: design and characterization.

Claudio E Calosso1, Salvatore Micalizio, Aldo Godone

  • 1Istituto Nazionale di Ricerca Metrologica (INRIM), 10135 Torino, Italy. calosso@inrim.it

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
|October 19, 2007
PubMed
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Pulsing vapor-cell clock operations improves stability by reducing light shifts. This study presents new electronics for synchronized pulsing and thermal stabilization, achieving excellent frequency stability for potential space applications.

Area of Science:

  • Atomic, Molecular, and Optical Physics
  • Metrology and Measurement Science
  • Electronic Engineering and Instrumentation

Background:

  • Pulsed operation of vapor-cell clocks is key to reducing light shifts and enhancing clock stability.
  • Implementing pulsed schemes necessitates fast-gated electronics operating on millisecond timescales.
  • Existing vapor-cell clock technologies face limitations in stability for demanding applications.

Purpose of the Study:

  • To design and implement novel electronics for synchronizing vapor-cell clock operation phases (optical pumping, interrogation, detection).
  • To develop electronics for precise thermal stabilization of the clock's physics package.
  • To characterize the performance of the pulsed vapor-cell clock, focusing on frequency stability.

Main Methods:

Related Experiment Videos

  • Design and construction of synchronized, fast-gated electronic control systems for pulsed clock operation.
  • Development of dedicated electronics for maintaining stable thermal conditions within the clock's physics package.
  • Experimental characterization of the clock's frequency stability using Allan deviation measurements.

Main Results:

  • Achieved a frequency stability of 1.2 x 10(-12) tau(-1/2) for averaging times up to 10(5) seconds.
  • Demonstrated successful synchronization of the distinct clock operation phases using the developed electronics.
  • Validated the effectiveness of the thermal stabilization system in maintaining optimal clock conditions.

Conclusions:

  • The developed pulsed electronics and thermal stabilization significantly enhance vapor-cell clock stability.
  • The measured frequency stability is highly competitive and suitable for advanced applications, including space missions.
  • This work paves the way for more robust and stable atomic clocks.