Oscillators – Automatic frequency stabilization using a phase or frequency... – Molecular resonance stabilization
Patent
1997-12-12
2000-02-15
Grimm, Siegfried H.
Oscillators
Automatic frequency stabilization using a phase or frequency...
Molecular resonance stabilization
331 941, H03L 726
Patent
active
060257555
ABSTRACT:
Frequency stabilization of an atomic system is improved by closed loop stabilization of the power level of an atomic excitation signal. A second harmonic atomic Rabi response varies with excitation power level so that power modulation of the atomic excitation and demodulation of the second harmonic response produces a power error signal for closed loop power level control using a voltage controlled attenuator. The atomic system also includes conventional frequency stabilization closed loop control using a voltage controlled oscillator. Both power and frequency modulation of the excitation signal generate a complete atomic response from which both power and frequency error signals are generated for both power and frequency closed loop stabilization.
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"Observation of the Rabi-resonance Spectrum", J.C. Camparo & R.P. Frueholz, Phys. Review A, vol. 38, No. 12, Dec. 15, 1998, pp. 6143-6150.
"Atomic Phase Delay in a Rubidium Atomic Clock", J.C. Camparo & R.P. Frueholz, Proc. 1993 IEEE International Frequency Control Symp.(IEEE Press, NJ, 1993), pp. 114-119.
Grimm Siegfried H.
Reid Derrick Michael
The Aerospace Corporation
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